Son of Nicholas
A modern spelling variation of the English surname Nixon. It ultimately derives from the given name Nicholas, which comes from the Greek elements 'nikΔ' (victory) and 'laos' (people).
Less common today
Nixxon isn't in the latest US Top 1000. It last peaked at #5,282 in 2017.
US births per 5-year period, 1990βpresent (SSA data).