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Pierre d’Ailly’s Vita of Celestine V

Published online by Cambridge University Press:  15 October 2025

CHRISTOPHER M. BELLITTO*
Affiliation:
Kean University , New Jersey
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Abstract

In 1408, as the Great Western Schism entered its fourth decade, the Parisian community of Celestine monks asked Pierre d’Ailly to write a life of their founder, Pietro Morrone, who served as Pope Celestine V in 1294. D’Ailly found in him an example that suited his times: a pope could resign without damage to the Church at large. With cardinals from both obediences ready to withdraw support from Avignon’s Benedict XIII and Rome’s Gregory XII, both of whom resisted resignation, d’Ailly made his case for papal resignation via his life of Celestine V.

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In 1408, the Parisian foundation of Celestine monks asked the eminent church statesman and former chancellor of the University of Paris, Pierre d’Ailly (1350–1420), to write a life of their founder, Pietro Morrone (1215–96), who served briefly as Pope Celestine v in 1294. D’Ailly took the opportunity to argue that a pope could resign without damage to the Church, which was by then entering its fourth decade under the Great Western Schism. He had found an example that suited his times. Both the Avignon Pope Benedict xiii and the Roman Pope Gregory xii had been steadfastly resisting their own statements that they would resign if his rival did so, but nothing came of that apparently half-hearted posturing nor of the dual and duelling popes’ planned meeting at Savona in 1408. With cardinals from both papal obediences ready to withdraw their support and find a new solution at the Council of Pisa planned for the following year, d’Ailly stepped into the moment to make his case for papal resignation via his life of Celestine v.Footnote 1

The text of d’Ailly’s Vita

Around 1408 the Parisian Celestines provided d’Ailly with what they claimed was Pietro Morrone’s autobiography.Footnote 2 There was already a connection: d’Ailly’s friend and protégé from the University of Paris’s Collège de Navarre, Jean Gerson (1363–1429), was quite close to the Celestines and had two brothers in the order. In his De iurisdictione spirituali (1392), Gerson had noted that Celestine v garnered praise for his humility and not blame for his resignation.Footnote 3 But this alleged autobiography was incomplete: Pietro, or whoever the author was, had not described his papacy. D’Ailly completed the story by retelling Pietro’s account of his childhood and asceticism, then adding a narrative and commentary on his brief reign as Celestine v as well as on its aftermath.

One may wonder about the authenticity of what the Celestines claimed was Pietro’s autobiography, especially since it is incomplete and quite hagiographical. Robert Nixon provisionally concluded that the text handed by the Celestines to d’Ailly is authentic and even autograph while noting that d’Ailly’s pen offered a fresh version that was ‘distinctly more polished and elegant’.Footnote 4 Although Nixon refers to the text as a papal autobiography, it is not clear whether it was written before or after Celestine v’s short papacy, but before seems likely since there are no direct references to the events of 1294 and afterwards. D’Ailly finished the job: he doubled the length of the Celestine text by recounting the official foundation of the Celestines, which, curiously, does not appear there, and continued with an account of Celestine’s papacy and resignation, post-papal life and death in exile.Footnote 5

D’Ailly’s first part is hagiography like the purported memoir, but the second part concerning his papacy, albeit praiseworthy, is more than that standard genre – although it includes accounts of miracles such as a lame boy enabled to walk by touching Celestine’s donkey after his entry into Rome.Footnote 6 The first part of d’Ailly’s Vita is slightly shorter than the second. He begins with a typical encomium declaring that he is unworthy of the task he has accepted since he himself falls short of his subject’s virtue. There follows a reading through of Pietro’s life before his papacy, including his childhood, and his establishment of an austere community of monks. D’Ailly traces closely the Celestine text in his own part i, including the young Pietro’s frequent statement that he wanted to serve God. He was the eleventh of a dozen sons of generous, humble and hard-working peasant parents, Angelerio and Maria. Once ordained, he himself was so humble that he feared saying mass because of his unworthiness.Footnote 7 Nixon noticed that d’Ailly seems to have decorously omitted some fractious and salacious details and episodes. First, Pietro’s account tells us that Maria marked him out for study after the death of an earlier son who had been so chosen. Pietro’s brothers, it seems, were annoyed that he was set aside from manual labour. Second, Nixon noticed that d’Ailly did not include Pietro’s relating how he was tempted at night by visions of two beautiful, naked women lying beside him.Footnote 8

Both the Celestine text and d’Ailly’s account offer what can be read as prophecies of the future monk’s (if not explicitly pope’s) service to his Church. The Celestine text recounts that Pietro’s mother told him she imagined her son dressed in religious garments at his birth, thus destined from the first for divine service. Elsewhere, Maria describes her dream in which Pietro, aged twelve at the time, was shepherding a flock of sheep. She was saddened because she interpreted the dream as a sign he would not rise higher than a mere shepherd. She fibbed a bit and told Pietro she had dreamed of ‘a certain cleric’. When he heard about the dream, Pietro told his mother he took it a different way: this certain cleric would shepherd souls. At this, Maria confessed that it was Pietro she had seen in the dream.Footnote 9 A pope is the supreme shepherd of souls and it could be that the Celestine text was implicitly indicating Pietro’s papal election. Again, while we cannot establish whether the Celestine text was composed before his papal election, it seems likely given the total silence on the subject – unless Maria’s dreams are oblique references to 1294 or d’Ailly took them as such.

Oddly, there is another possible prophecy of Pietro’s papal election and resignation in the Celestine text that d’Ailly omitted. D’Ailly could easily have read these few sentences as a portent of Pietro’s papal election and subsequent resignation. The Celestine text and d’Ailly’s Vita agree up to a certain point in relating the anecdote. Near the end of the Celestine text and therefore of d’Ailly’s first part, both authors describe an episode in which Pietro is sitting in his cell reading by a window. He then sees a vision of glorious beings praying the office of dedication outside his cell. The Celestine text, but not d’Ailly’s Vita, continues:

And this brother [Pietro] said the Office with them and marvelled at all of this, saying to himself, ‘What is this? I am [surely] not sleeping now!’ He looked at the book, placing his hands upon its letters, for it was now day. And when the Office was finished, he clearly sensed a vestment being removed from him, which he had not noticed when it was being put on.

D’Ailly clearly omitted these sentences deliberately: the Celestine text and d’Ailly’s Vita mirror each other before and after them.Footnote 10 Why d’Ailly omitted this text, which seems to indicate Pietro’s papal election and resignation, is puzzling. The passage would have made stronger d’Ailly’s case that this saintly man was destined for high service beyond his life as a monk and founder of a congregation.

D’Ailly’s focus on Celestine’s election and his subsequent resignation is the core of his part ii as he considers events not found in the Celestine text. He relates how the Holy Spirit inflamed a divided Church with the divine choice of the poor hermit as pope. D’Ailly notes how Pietro resisted and tried to flee his election, but submitted to God’s will. The monk believed he was unworthy, but d’Ailly comments that this very sentiment proves just how worthy he actually was. Surrounded, and with no hope of escaping, he obeyed:

And when all the people leaped up joyfully at this honour of his, inspired by the Lord, he humbly tried to refuse, considering himself unworthy of the title of such an honour, that he might become more worthy: for he who refuses what he deserves is made more worthy … he accepted more grudgingly than willingly.Footnote 11

Faced with Rome’s pomp, he tried to enter the city on a donkey and to live as pope with his customary internal restraint, simplicity and humility. D’Ailly insulates Celestine from criticism that he acceded to a certain level of customary regalia because this had been done by major and minor bishops dating back to Pope Sylvester, whom d’Ailly does not explain was endowed by the emperor Constantine, not for their own glory but for Christ’s. To bear such ceremony with inner fortitude was not vanity or vice but virtue and merit.Footnote 12

D’Ailly says almost nothing of Celestine’s papacy except that he named twelve cardinals, including two brothers of his own order, and tried to live austerely. Within months, he decided to resign and after ascertaining that this was possible, he called a consistory to lay aside the burdens and honours of the papacy. The event was not unprecedented but still rare.Footnote 13 Celestine depicted himself in his resignation statement as a weary man who, through humble self-reflection, came to realise that he was no longer capable of fulfilling the obligations of the papacy. He asserted that he was freely renouncing the papacy (‘sponte ac libere cedo papatui’); d’Ailly reiterated this important fact (‘libere cessit Papatus oneri et honori’).Footnote 14 He showers Celestine with praise for his unique humility and notes an immediate miracle just like the one from the beginning of his papacy: a lame person is made to walk. Nevertheless, within twenty years Dante would dramatically place Celestine just inside hell’s doorway for his great refusal (‘il gran rifiuto’) of the papal office, attributing it to cowardice.Footnote 15

D’Ailly chastises Celestine’s critics who say he resigned not because of virtue but an impaired soul.

Oh, therefore, what a worthy resignation of the papacy, which, as far as true glory is concerned, is to be preferred to many papal dignities! O glorious man, who, if he had done nothing else worthy of the honour of memory, yet this deed was so admired and by so few, alas! by imitating him he would commend himself to posterity! Indeed, the rejection of commendation and glory contributed much more than the dignity received and the very rejection of honour was more honourable than the acceptance.Footnote 16

It is noteworthy that d’Ailly immediately suggests Celestine’s action as a model for the two stubborn popes of the current schism.

Alas! Alas! Would that this example of honourable humility deserved to be imitated by those who, in this miserable and mournful time of ours, are only to be attacked at the height of prideful honour; for almost thirty years now the Church of Christ has remained torn apart by their terrible dissension and nefarious schism.Footnote 17

D’Ailly then continues the fairly standard tale of a peaceful and worn-out old man, the once-pope Pietro Morrone, hunted across the Italian countryside by henchmen of the threatened and paranoid Boniface viii, who was Celestine v’s successor. D’Ailly invokes the image of Herod pursuing the holy family to Egypt. He contrasts Pietro in flight, leaving examples of humility and healing miracles as he runs, with Boniface’s men racing after him in a spirit of dishonour and insult until they finally imprisoned him:

But, for shame! Thus Boniface, another Herod, kept Peter in prison; thus it is unjustly decreed that an innocent man should be kept in prison, and in such a prison, who was lately the custodian and shepherd of all the Christian sheep. O truly horrible sentence, indeed truly Herodian cruelty! What storm of words, then, does such a wicked man deserve? Surely our feeble words fall short in describing this abomination, for which even the eloquence of Cicero would not be sufficient.Footnote 18

D’Ailly concludes with the scene of Pietro’s peaceful death and a list of further miracles. In a final sentiment, comprising the last sentences of this Vita, d’Ailly asserts that, in the end, Pietro Morrone preferred a life in the mode of Mary rather than Martha, but that his life’s efforts taken together still benefitted the whole Church.Footnote 19

Contexts of d’Ailly’s Vita

D’Ailly’s Vita does not exist in a vacuum. His interest in 1408 in Celestine v’s resignation as pope was predated by his efforts, along with many colleagues, starting more than a decade earlier, to encourage the Avignon popes, first Clement vii and then Benedict xiii, to resign. Also, d’Ailly wrote letters directly to the competing popes urging resignation, and around the same time he composed his Vita of Celestine v.

Taking these two contexts in sequence: the first was that by the 1390s, after more than a dozen years of schism, the Paris university community, working sometimes in tandem with French princes and prelates of varying commitment to the effort, became the nexus of discussions about how to end the schism.Footnote 20 Increasingly, the French spheres of power and authority turned to the strategy of withholding obedience and taxes from Avignon’s Benedict xiii. Confusion was compounded by the fact that members of the Valois court were fighting their own internal conflicts in trying to control the unstable French king Charles vi. Like many in university, royal and papal circles, d’Ailly found himself balancing a number of loyalties: to the university community where he was chancellor, as well as to the Valois court he served as royal chaplain – both from 1389 – and all parties’ wavering levels of support for the Avignon papacy. It became clear during the several councils held in Paris in the mid-1390s that a consensus was emerging among most academics and royals: it was best to force Benedict xiii’s resignation. This was known as the via cessionis, albeit an enforced one rather than d’Ailly’s preferred voluntary stepping down, which was one of three viae the university community proposed formally after lengthy deliberations in 1394. The other two were the via concilii (a conciliar resolution) and the via compromissi (negotiated settlement), both of which would also have entailed resignation. A fourth way, the via facti or way of force, violence and military action had created death and danger but no good result and was no longer seen as the right way to proceed, though all along this path fell far behind the other three as desirable. A pope in place because of a victory on the battlefield could certainly not sit securely on the papal throne as the vicar of the prince of peace.Footnote 21

As early as February 1395, d’Ailly spoke in favour of voluntary abdication as the most expedient solution to the schism.Footnote 22 D’Ailly stood against forced abdication, which he saw as impractical and counter-productive. His assessment proved to be correct: that same month, when a Council of Paris voted to withdraw obedience to force Benedict xiii to step down, the Avignon pope’s response was simply to refuse to do so and the matter fell to one side for a few years. As these debates were taking place at Paris, the Avignon pope had made d’Ailly diocesan bishop of Puy in 1395 after the University of Paris forced him out as chancellor, and then moved him to the diocese of Cambrai in 1397, which opened d’Ailly to the charge of favouring his patron.Footnote 23 The Valois court and the university community moved more firmly to force Benedict xiiis abdication through a second attempt at a withdrawal of obedience, which took effect in 1398. D’Ailly was again proved right. Although France did indeed stop paying papal taxes and obeying the Avignon pope, Benedict xiii did not resign. When the French saw that their action was ineffective and restored obedience in 1403, matters stood essentially as they had in 1398. Five years has passed fruitlessly.

D’Ailly’s progression embraced a growing comfort with papal resignation that he came to see as a sine qua non to ending the schism. His hope for the via cessionis as early as 1395 is one example, but then and subsequently he continued against others to support a mediated resolution and therefore a voluntary, not forced, resignation. In 1403, once France and Benedict xiii had reached a rapprochement and papal taxes flowed again to Avignon, d’Ailly began his Tractatus brevis de varietate viarum ad unionem Ecclesiae with a plea for moderation that would avoid stubbornness. He states clearly his continuing desire for a voluntary abdication: ‘Nevertheless, there is no doubt that such a voluntary and free surrender would be very useful for the arrangement and preparation for ecclesiastical union.’ He still hoped, perhaps too optimistically, that the Roman and Avignon contenders would both give up their seats in good faith. He also suggested that, should this scenario actually happen, before abdicating both popes should acknowledge the validity of each other’s college of cardinals so that a unifying election could occur expeditiously.Footnote 24

The second context for d’Ailly’s Vita is that it was not the only document he wrote at the time. In addition to the earlier writings, around 1408, the same year as the Vita, d’Ailly wrote to the contending popes and then in 1409 to the Council of Pisa called by cardinals of both obediences. Notably, his language was getting stronger: it was clear by then that neither of the popes would freely resign. The Roman and Avignon popes had occasionally raised the notion that they would resign if both of them did so simultaneously, but their actions belied their sincerity. Benedict xiii wanted this mutual resignation to occur through a joint negotiation, which was supposed to occur at Savona but did not, while Gregory xii twice named cardinals (in May and September 1408), which was certainly not an indication that he was ready to cede his place on the papal throne.Footnote 25 This might also have been Gregory’s attempt to pack a future conclave with his supporters so that, having resigned the papacy (forcibly or voluntarily), he might be re-elected.

Probably with some reluctance, d’Ailly joined his colleagues in raising the possibility of a forced resignation or even a deposition given the length and uniqueness of the split. On 28 July 1407, he said as much to the Roman Pope Gregory xii, concluding that the Church might have no a choice but to act in this manner: ‘In absolute terms this way may not be in compliance with the law, but the present circumstances are such that this expedient ought to be used.’ He followed with another letter to the Roman pope on 15 September 1407, almost pleading with him to be true to his prior openness to abdication: ‘Be for us an angel of peace. Save yourself and us with you by restoring unity to the church as you so often promised in our presence, shedding tears. May the words that then fell from your mouth not be rendered useless.’Footnote 26

Two letters to Benedict xiii followed. In the first, on 26 January 1408, d’Ailly laments that Gregory xii had not resigned as he had promised. He mentions three ways to resolve the schism: that there be an agreement of union if one of the contenders should die, a general council that Benedict should convene, and a third way that he does not wish to mention and that needed conciliar approval.Footnote 27 Bernard Guenee interprets this third remedy to mean abdication or deposition. He also colourfully contends that while d’Ailly still held a measure of loyalty to the Avignon pope, he ‘nevertheless had begun to admit to himself that he might not follow the pontiff all the way to the end of his rope’.Footnote 28

In his second letter to Benedict xiii, sometime in 1409, d’Ailly definitively and finally broke with his patron, despite the fact that he owed his episcopal ordination and appointments to him. There is a tone of sadness, disappointment and indeed anger. He chastises the Avignon pope at the beginning of the letter and at its end for having said repeatedly that he would resign for the sake of church unity, but then always failing to do so:

O! how deceitful was this ambition of yours for honours and the seat in which you sat as a Pharisee and wanted to be called a rabbi by the people! Therefore, good father, turn your eyes on yourself so that you may know yourself better, and see how, I ask, you are making the Church of God into a monster. Do you not see how the princes and kings of the earth have joined together as one against you and Gregory, to tear apart your chains and to reunite the members of the Church divided by you?

Now, he says, the Church is in the hands of two liars (clearly Gregory and Benedict) who have lost sight of God and who have no fears of the danger into which they put their souls. Truly, the blind have led the blind into the pit they created. In familiar language, he declares that a body cannot have two heads and scorns Benedict for not doing anything to alleviate the situation when he could have done so. D’Ailly directly tells the Avignon pope he had supported for more than a decade that he used to be a lawful man, but now, drunk with power, he seeks neither peace nor unity. We read next what surely is an implicit comparison with Celestine v, since just the prior year d’Ailly had written his Vita of him: ‘Why, good father did you affirm that to renounce the papacy was a mortal sin? Have you not heard with your ears and read with your eyes [that] the holy fathers do this very thing, the sacred canons and words of the saints approving the same thing? Why are you mad?’ As a final warning, d’Ailly repeats an opening statement: that Europe’s princes are now aligned against him.Footnote 29

D’Ailly was now firmly on the side of a conciliar solution. In a short letter of 1 January 1409 that he attached to his Propositiones utiles, he again grieves that the Roman and Avignon popes had not resigned voluntarily. There he once more mentions resignation as being in line with ancient and approved precepts.Footnote 30 Since the actions he had long hoped for – the mutual and voluntary abdication of all papal claimants – had not occurred, it was time for the Church to act. In fact five more years would pass before the general council of Constance began to resolve the Great Western Schism.

Coda

In his surprise 2013 resignation, Pope Benedict xvi twice echoed Celestine v’s resignation statement, although he did not invoke him explicitly. First, Benedict xvi stressed that he was laying down the papacy with full freedom (‘plena libertate’); second, he declared that, after much reflection, he judged that he was no longer up to the papacy’s burdens physically and spiritually.Footnote 31 He had also visited Celestine v’s tomb in L’Aquila in 2009, where he laid a pallium on the glass coffin. This might have been an indication that he foresaw a situation in which he, too, would choose to resign.

Questions remain unresolved in the modern papacy about the efficacy and process of a papal resignation or removal in the case of physical or mental incapacity, especially concerning its validity and freedom.Footnote 32 The quality of medical care makes it quite possible that there could be a future pope who was physically well but mentally incapacitated or vice-versa. In that case, there would be a need for a process whereby an incapacitated pope who could not freely resign could be removed from office. No such protocols currently exist.Footnote 33 These facts, along with the possibility of future papal resignations now that Benedict xvi has revived the discussion, make historical considerations of past papal resignations and removals all the more relevant.

Footnotes

The author wishes to thank this Journal’s anonymous peer reviewer for judicious and helpful commentary.

References

1 Marini, M., ‘Celestino v visito de Pierre d’Ailly’, in Capezzali, W. (ed.), Celestino V e le sue immagini del medio evo, L’Aquila 1993, 8399 Google Scholar. Marini notes in passing some points about d’Ailly’s application of Celestine v’s resignation to his own times that are explored in greater depth and with other texts and greater context here. So, too, Romagnoli, A. B., Una memoria controversa. Celestine V e le sue fonti, Firenze 2013, 61–5Google Scholar.

2 D’Ailly’s Vita of Celestine v is found in Acta sanctorum, Maii, tomus IV, Antwerp 1685, 484–98. On the Parisian Celestines and their connection with d’Ailly see Shaw, R. L. J., The Celestine monks of France, c. 1350–1450: observant reform in an age of schism, council and war , Amsterdam 2018, 251–2Google Scholar.

3 Shaw, The Celestine monks of France, 228; G. H. M. Posthumus Meyjes, Jean Gerson, apostle of unity: his church politics and ecclesiology, trans. J. C. Grayson, Leiden 1999, 30. For the relevant passage see Joannis Gersonii … opera omnia, ed. Louis Ellies Dupin, ii, Antwerp 1706, 261–7 at p. 266: ‘immo esset summa laus pro tanto bono etiam ius suum voluisse dimittere sicut durante pace fecit Coelestinus qui ob hoc culpatur sed laudatur humilis’.

4 Nixon, Robert, ‘The life of St Celestine: an overlooked but genuine autobiographical memoir?’, American Benedictine Review lxxii/i (2021), 84106 10.1353/ben.2021.a923916CrossRefGoogle Scholar. This includes a translation. It is important to note Nixon’s circumscribed conclusion after surveying the manuscript evidence: ‘While these considerations are not in themselves conclusive, it is suggested that in combination they form a reasonable basis for provisionally accepting the authenticity of the work’ (p. 91).

5 On his rule’s approval see d’Ailly, Vita, i.5, p. 490.

6 Ibid. i.11, p. 493.

7 Nixon, ‘The life of St Celestine’, 100; d’Ailly, Vita, i.7, pp. 486–7.

8 Nixon, ‘The life of St Celestine’, 90–1.

9 Ibid. 93–5; d’Ailly, Vita, i.1, 3, p. 485.

10 Nixon, ‘The life of St. Celestine’, 105; d’Ailly, Vita, i.14, p. 488.

11 ‘Et cum de hoc ejus honore totus populus laetus, inspirante Domino, prosileret, humiliter ille recusare fatagebat, indignum se titulo tanti honoris existimans, ut dignus magis fieret: magis enim dignus efficitur, qui quod meretur, recusat….magis violentatus, quam voluntarius acceptavit’: d’Ailly, Vita, i.10, p. 493.

12 ‘Hos quippe magnificos apparatus, sive in equis sive in vestibus ac aliis exterioribus ornamentis, quos plerique pompas vocant, a tempore B. Silvestri Papae sancti Patris, non solum summi pontifices, sed et alii minores episcopi, non ad suam, sed ad Christi et ecclesiae ejus gloriam extollendam intoduxisse credendi sunt; quos exterius cum temperantiae moderamine observare, interius tamen servata humilitate, non est vanitatis aut vitii, sed est virtutis ac meriti’: ibid. i.11, p. 493.

13 Grohe, Johannes, ‘Deposizioni, abdicazioni, e rinuncie al pontificato tra 1046 e 1449’, Chiesa e storia. rivista dell’associazione Italiana dei professori di storia della chiesa iv (2014), 5572 Google Scholar; Gigliotti, Valerio, ‘Un soglio da cui non si scende…? Aspetti della renuntiatio papae nella storia giurdica medievale’, Ephemerides iuris canonici lvi/1 (2016), 3170 Google Scholar at pp. 48–55 for consideration of Celestine v.

14 Annales Ecclesiastici Caesaris Baronii, ed. Augustin Theiner, xxiii, Paris 1871, 145; d’Ailly, Vita, ii.13, p. 494.

15 Dante, Inferno, canto iii, 1–60. Felice Accrocca reviews more measured judgements on Celestine v, especially as they emerged around the 700th anniversary of his papacy in 1994: ‘“Querebat semper solitudinem”: da eremita a pontefice: rassegna di studi Celestiniani’, Archivum historiae pontificiae xxxvii (1997), 257–87.

16 ‘O dignam igitur papatus renuntiationem, quae, quantum ad solidam gloriam pertinet multis papalibus dignitatibus praeferenda est! O gloriosum virum, qui si nihil aliud dignum honore memoriae gessisset, hoc tamen facto tam admirando et a paucis, proh dolor! imitando abunde se posteritati commendasset! Multo plus siquidem commendationis et gloriae rejecta, quam recepta dignitas contulit et ei ipsa abjectio honoris, quam acceptio, honorabilior fuit’: d’Ailly, Vita, i.13, p. 494.

17 ‘Heu! Heu! utinam hoc honorandae humilitatis exemplum hi imitari meruissent, qui in hoc nostro tam misero tamque luctuoso tempore, superbi honoris culmen insectari nisi sunt; non jam fere triginta annis Ecclesia Christi eorum horrendo dissidio ac nefando schismate lacerate maneret’: ibid.

18 ‘Sed, pro pudor! Sic Bonfacius ille, alter Herodes, Petrum servabat in carcere; sic injuste decernitur vir innocens in carcerem et talem carcerem custodiri, qui nuper custos erat et pastor totius oviis Christiani. O vere horrenda sententia, imo vere Herodiana saevitia! Qua igitur procella verborum tam impium nefas obtui meretur? Certe ad hoc monstruosum facimus invalida nostra deficit lingua, ad quod etiam nec Cicernoiis eloquentia sufficeret’: ibid. i.17, p. 496.

19 d’Ailly, Vita, i.20, p. 497. For an assessment of d’Ailly’s own career viewed through the prism of Martha and Mary see Bellitto, Christopher M., ‘To be Martha or Mary during the Great Western Schism’, Studies in Spirituality xxix (2019), 7185 Google Scholar.

20 Witt, Jeffrey C., ‘Finding authority in a time of confusion: early deliberations of the western schism at the University of Paris’, in López, Celia, Montada, Josep Puig and Arnas, Pedro Roche (eds), Legitimation of political power in medieval thought, Brepols 2018, 423–4110.1484/J.RPM.5.115487CrossRefGoogle Scholar; Swanson, R. N., Universities, academics, and the great schism, Cambridge 1979 10.1017/CBO9780511523229CrossRefGoogle Scholar.

21 Rollo-Koster, Joëlle, Raiding Saint Peter: empty sees, violence, and the initiation of the Great Western Schism, Leiden 2008, 167223 10.1163/ej.9789004165601.i-267.17CrossRefGoogle Scholar; ‘Civil violence and the initiation of the schism’, in Rollo-Koster, Joelle and Izbicki, Thomas M. (eds), A companion to the Great Western Schism, Leiden 2009, 965 CrossRefGoogle Scholar; and The Great Western Schism, 1378–1417: performing legitimacy, performing unity, Cambridge 2022, 18–68.

22 Bellaguet, M. L., Chronique du religieux de Saint Denys, ii, Paris 1840, 224 Google Scholar.

23 On d’Ailly’s longstanding relationship with Benedict xiii see Millet, Hélène and Maillard-Luypaert, Monique, Le Schisme et le pourpre: le cardinal Pierre d’Ailly, homme de science et de foi, Paris 2015, 4181 Google Scholar.

24 ‘Tamen non est dubium, quin huiusmodi cessio voluntaria et libera esset valde utilis disposicio et preparacio ad ecclesiasticam unionem … ante cessionem quilibet contendencium vicissim ratificaret et approbaret collegium alterius, ut per ambo collegie sic ratificate nova fieret electio’: Martin de Alpartils chronica acitatorum temporibus domini Benedict XIII, ed. Franz Ehrle, xii, Paderborn 1906, 497–504 at pp. 499, 503.

25 Rollo-Koster, The Great Western Schism, 50–1.

26 Salembier, Louis, Le Cardinal Pierre d’Ailly, chancelier de l’université de Paris, évéque du Puy et de Cambrai, 1350–1420, Tourcoing 1932, 228–9Google Scholar.

27 ‘vix spero quod adversarius vester daturus sit pacem Ecclesiae per viam quam quaeris. Viam dico cessionis, quam ille tam solemniter promissit, juravit, et vovit … Tertium remedium hic taceo, quia non nisi ex generalibus Concilii consensit ac communi auxilio, videtur posse utiliter practicarii, vel praetactari salubriter’: Joannis Gersonii … opera omnia, ii. 105–6 .

28 Guenee, Bernard, Between Church and State: the lives of four French prelates in the late Middle Ages, trans. Arthur Goldhammer, Chicago 1987, 211–12Google Scholar.

29 ‘E! quam dolosa fuit haec tua honoris ambitio et cathedrae, in qua ut pharizaeus sedisti et a populo rabbi vocari voluisti ! Reflecte ergo, bone pater, oculos tuos super te ut melius te cognoscas, et vide quomodo, quaeso, Ecclesiam Dei monstruosam facis. Nonne vides quomodo principes terrae et reges convenerunt in unum adversum te et Gregorium, ad diripiendum vincula veslra, ad reuniendum membra ecclesiae per vos divisa … Cur, bone pater, affirmabas papatui renunciare esse peccatum mortale? Nunquid auribus tuis audivisti et oculis tuis legisti sanctos patres hoc idem facere, sacrosque canones et sanctorum dicta hoc idem approbare? Cur insanis?’: Chroniques relatives a l’histoire de la Belgique sous la domination des ducs de Bourgogne, ed. J. M. B. E. Kervyn de Lettenhove, Brussels 1870, 138–43 at pp. 140, 142.

30 ‘Quam enim per viam liberare cessionis amborum dominorum contendentium de papatu, viam utique desideratissimam ab omnibus nuper speratam fidelibus, nondum prodolor, caeca ambitione procurante, data sit pax ecclesiae; quae alia restat via nisi haec ab antiquis patribus approbata et vestris tandem a spiritu sancto pectoribus inspirante’: P. Tschackert, Peter von Ailli, Gotha 1877, appendix x, pp. 29–30. A brief introduction and translation may be found in Francis Oakley, ‘The propositiones utiles of Pierre d’Ailly: an epitome of conciliar theory’, Church History xxix/4 (1960), 398–403. See also Oakley, Francis, The political thought of Pierre d’Ailly: the voluntarist tradition, New Haven 1964, 159–62Google Scholar.

32 Bellitto, Christopher M., ‘Benedict xvis resignation: historical insights’, Revue d’histoire ecclésiastique cxviii/3–4 (2023), 724–4610.1484/J.RHE.5.141880CrossRefGoogle Scholar.

33 For a well-informed set of proposed protocols see <https://www.progettocanonicosederomana.it/> , accessed 10 April 2025.