Colahan Family History
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Colahan Name Meaning
Irish: possibly an Anglicized form of Gaelic Ó Cathaláin ‘descendant of Cathalan’, a diminutive of Cathal (see Cahill). It may also be from Mac Uallocháin ‘son of Uallachán’, a personal name from a diminutive of uallach ‘proud’.
Source: Dictionary of American Family Names ©2013, Oxford University Press
Similar surnames: Callahan, Conahan, Monahan, Coleman, Morahan, Hallahan, Cavan, Cohan