Mulhern Family History
Mulhern Name Meaning
Irish (Donegal): Anglicized form of Gaelic Ó Maoilchiaráin ‘descendant of Maoilchiaráin’ a personal name meaning ‘devotee of (Saint) Ciarán’ whose personal name (Anglicized Kieran) is from a diminutive of ciar ‘dark black’. For an earlier form of the surname see Mulkerrin .
Source: Dictionary of American Family Names ©2013, Oxford University Press