Son of Nicholas; victory of the people
A patronymic surname-turned-first-name, Nixson is a variant of Nixon. It ultimately derives from the Greek name Nicholas, combining 'nike' (victory) and 'laos' (people).
Less common today
Nixson isn't in the latest US Top 1000. It last peaked at #10,493 in 2018.
US births per 5-year period, 1990βpresent (SSA data).