Until the present century Trinity was the only college in Cambridge where the fellowships were open without territorial appropriation.
All the other colleges (with the exception of King's) filled up each vacancy by electing if possible some one whose name had been matriculated as belonging to the same county as the outgoing fellow.
The counties were thus distributed for Peterhouse in 1630 (by a statute superseding Warkworth cap. xii.) into north (Boreales) and south (Australes) by a line diawn from Yarmouth to Machynlleth.
Northern. Bedford, Cheshire, Cumberland, Derby, Durham, York, Hunts, Lancaster, Leicester, Lincoln, Norfolk, Northampton, Northumberland, Notts, Rutland, Salop, Stafford, Warwick, Westmoreland, Worcester,—Anglesea, Caernarvon, Denbigh, Flint, Merioneth, Montgomery.
Southern. Berks, Bucks, Cambridge, Kent, Cornwall, Devon, Dorset, Essex, Gloster, Herts, Hereford, Middlesex, Monmouth, Oxon, Southampton, Surrey, Sussex, Suffolk, Somerset, Wilts,– Brecon, Caermarthen, Cardigan, Glamorgan, Pembroke, Radnor.
There might he four fellows at one time from Middlesex or Cambridgeshire, but only one each from any of the others (the whole of Wales counting as one) except by royal dispensation.
If it happened that there was no candidate of the right county ready, the election would I suppose lie between the men of any northern (or southern) counties which had no representatives in the existing body of fellows.
In 1785, Henry Gunning did not enter at S. John's because Cambridgeshire was filled by the bishop of Ely's fellow, and a professor's son, already admitted, was prepared to step into his shoes.