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Surname Etymology and Meaning of MCGINN

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: Anglicized form of Gaelic Mag Finn, a patronymic from the personal name Fionn (see Finn). This is the name of an ecclesiastical family in County Down.

Source: Dictionary of American Family Names (2003)