McMahon (surname)
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McMahon or MacMahon (/məkˈmæn/ mək-MAN or /məkˈmɑːn/ mək-MAHN; older Irish orthography: Mac Mathghamhna; reformed Irish orthography: Mac Mathúna; meaning "son of the bear")[1] is an Irish surname.
The surname came into use around the 11th century by two different Irish clans: The MacMahons of Thomond, a sept of the Dál gCais, and the MacMahons of Oriel, rulers of Airgíalla. Additionally, a separate McMahon family in County Fermanagh is descended from Mahon Maguire, a grandson of Donn Carrach Maguire.[2]
McMahon or MacMahon is the surname of the following people: