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Surname Etymology and Meaning of KEEGAN

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Name meanings and etymologies are often disputed. The information here is compiled from freely available sources, and no claims whatsoever are made for accuracy, either historical or etymological.

Irish: reduced Anglicized form of Gaelic Mac Aodhagáin ‘son of Aodhagán’, a personal name that is a pet form of the ancient Irish personal name Aodh ‘fire’ (see McKay).

Source: Dictionary of American Family Names (2003)