::I agree, Iacobus, although to be fair we have to admit that many people do use this kind of expression. "Episcopus Romae" doesn't get so many Google hits as "Episcopus Romanus", but it still gets a fair few, including some reputable texts.
::Incidentally, Aulus, English wouldn't be the starting-point here and needn't matter much to us. His title is "Bishop of Rome" in English because that's a translation that someone fixed on ... because it sounded good in English. The title started out in Latin, so the real task is to find early sources in Latin. <font face="Gill Sans">[[Usor:Andrew Dalby|Andrew]]<font color="green">[[Disputatio Usoris:Andrew Dalby| Dalby]]</font></font> 18:39, 16 Februarii 2012 (UTC)