The hallahan Surname
hallahan Name Meaning and History
Irish: Anglicized form of Gaelic Ó hÁilleacháin
‘descendant of Áilleachán’, a personal name from a
diminutive of áille ‘beauty’. This Cork surname is sometimes
confused with Halligan, an Ulster surname.
Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4
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