Ó Cathaláin

== Irish == === Etymology === Ó (“grandchild, descendant”) + the personal name Cathaláin, a diminutive of Old Irish Cathal itself from Proto-Celtic *Katuwalos (“strong in battle”). === Proper noun === Ó Cathaláin m (genitive Uí Chathaláin) a male surname, feminine equivalent Ní Chathaláin ==== Descendants ==== English: O'Culhane