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The mcdermott Surname

mcdermott Name Meaning and History

Irish: Anglicized form of Gaelic Mac Diarmada ‘son of Diarmaid’, a personal name possibly composed of the separative prefix di- + farmat ‘envy’, hence 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 Connacht.

Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4
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mcdermott Family Facts

Distribution of mcdermott Families in the US in 1920
Number of mcdermott families
 341-679
 114-340		 1-113
 0
Compiled by Ancestry.com.au from the 1920 US Federal Census records

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