McNair family crest
The Scottish surname McNair, also found in Northern Ireland, is of patronymic origin. The name McNair is derived from the Gaelic names Mac Iain Uidhir, meaning " The son of sallow John " ,  Mac an Oighre, meaning " The son of the heir ", or Mac an Mhaoir, meaning " The son of the steward ". Today there are approximately 15,000 bearers of the surname McNair living in The United States.


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