The Irish surname McDermott is an anglicized form of the Gaelic name Mac Diarmada meaning “son of Diarmaid,” a personal name meaning “free from envy.” This name was borne in Celtic legend by the lover of Gráinne, and, in historical times, by Diarmaid Mac Murchadha, the 12th-century king of Leinster whose appeal to the English for support led directly to the Anglo-Norman presence in Ireland. Mac Diarmada was an important name in the western province of  Connaught, and to this day most bearers hail from counties Galway, Leitrim, Sligo and Donegal, all in western Ireland. Today there are more than 30,000 people with the family name McDermott living in The United States. 

MCDERMOTT RAISED FAMILY CREST RING CELTIC BAND