Ó Cathaláin

== Irish == === Etymology === Ó (“grandchild, descendant”) + the personal name Cathalán, 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 originating as a patronymic, feminine equivalent Ní Chathaláin ==== Descendants ==== English: O'Culhane