Thomason Family History
Thomason Name Meaning
English (mainly Lancashire): from the Middle English personal name Thomas + -son ‘son of Thomas’. Americanized form (and a rare Swedish variant) of Swedish Thomasson a cognate of 1 above. Americanized form of Danish Thomasen and Norwegian Danish Dutch or North German Thomassen cognates of
Source: Dictionary of American Family Names 2nd edition, 2022