This page contains an index of all the individuals in the database with the surname of O'Cathan. Selecting the person’s name will take you to that person’s individual page.

Given Name Birth Death Parents
Agnes, of Ulster about 1280 UNKNOWN O'Cathan, Cumagh Donn King of Fir-na-Creabh
Cumagh Donn, King of Fir-na-Creabh about 1260 1303 1303