Thomson Family History
Thomson Surname Meaning
Scottish English and Northern Irish: variant of Thompson. Scottish: sometimes an Anglicized form of Gaelic McThomas; see McTavish McComish.
Americanized form of Danish, Norwegian, and North German Thomsen. Compare Thompson.
Americanized form (and a rare Swedish variant) of Swedish Thomsson, a cognate of 3 above.
Source: Dictionary of American Family Names 2nd edition, 2022