McAleer

The surname McAleer originates from County Tyrone and Armagh, Ulster on the island of Ireland, moving into western regions of Scotland. It is an Anglicisation of the Gaelic Mac Giolla Uidhir or Mac Giolla Uír. It is thought to mean "Son of the servant of Saint Odhar". Legend says that Saint Odhar was Saint Patrick's charioteer.

...
Wikipedia