Comments (Meaning / History Only)
Mathghamhna is another spelling of the name. This spelling was used by a grandson of Brian Boru. Mathghamhna mac Cain, the grandson, is the patronym of the O'Mahony/O'Mahoney clan of County Cork. Mathghamhain mac Cennétig, the brother, is the patronym of McMahon clan of County Clare.
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