This article1sets out to reassess the idea, repeated by many scholars, that there was a bishop from the Central Asian city of Qumul (or Hami) who was present in Baghdad around the time when one patriarch of the Church of the East – Makkika II – was buried and another – Denḥa I – was consecrated. After an initial consideration of what we know about the city of Qumul/Hami, we examine the various authors who have held to this idea and the sources, both primary and secondary, which they invoke as proof that the idea is correct. Gradually moving back to the earliest witnesses, we eventually arrive at the Maronite scholar Joseph Assemani’s Bibliotheca Orientalis Clementino-Vaticana and the fourteenth-century primary source, Ṣalībā ibn Yūḥannā. A suggestion is made for how the idea originated and developed, thanks in part to the account of Marco Polo, but more definitively to Michel Le Quien’s Oriens Christianus.