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Surname Etymology and Meaning of MCGAHAN

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.

Northern Irish: Anglicized form of Gaelic Mac Eacháin, ‘son of Eachán’ a diminutive of Eachaidh, a personal name based on each ‘horse’. Compare Keogh.

Source: Dictionary of American Family Names (2003)