protocancellarius

protocancellarius [protos < πρῶτος+LL cancellarius] , arch-chancellor (in quot. as title of official in Holy Roman Empire). s1257 archiepiscopus ‥ Coloniensis, sacri imperii prothocancellarius, et quidam alii magnates Alemannie M. Par. Maj. V 601; archiepiscopus Colonie, cujus titulus est sacri imperii prothocancellarius post honorem archipresulatus Ib. 604.