Gary Davidson was born as the son of John Stewart Ames and Margaret Regena Davidson.
Scottish, northern English, and Jewish (Ashkenazic): from the personal name David + -son. As a Jewish name, the last element comes from German Sohn ‘son’.
Irish (Down) and Scottish: adopted for Gaelic Mac Daibhéid ‘son of David’; see McDevitt .
Americanized form (and a rare Swedish variant) of Swedish Davidsson: patronymic from the personal name David .
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