Other Forms FormsDonnegan, Doneghan, Donneghan, Donagan, Donnagan, Donnaghan, Dunegan, Dunnegan, O'Donegan, O'Dunnegan, O'Donnaghan, Dongan, Donegin, Donnegin, Donnagen, Donagen, Donnegen, Donegen, Donnigan, Donigan, Dunnican, Dunican, Dunigan, Dunnigan, McDunnigan, McDonegan, Dongane, Dongen, Dungan
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Contributor Contrib.trisha_cluskey on 1/26/2016
Anglicized form of the Gaelic surname Ó Donnagáin. Diminutive of "donn" which means "brown," referring to hair color.