Meagher- Ó Meachair or O'Meachair (anglicised as Mahar, Maher, Mahir, Marr, Meagar, Meagher, Meaher, O'Maher and O'Meagher) is a Gaelic Irish surname. Ó Meachair literally means grandson/descendant of ('O' prefix) the kind, generous or hospitable (Meachair). By the Irish name convention, this becomes "descendant of a kind, hospitable chief (clan leader)". .....