Last name COX: origin and meaning

Cox : 1: English: variant of Cocke and Cook with genitival or post-medieval excrescent -s.2: Irish (Ulster): mistranslation of Mac Con Coille (‘son of Cú Choille’ a personal name meaning ‘hound of the wood’) as if formed with coileach ‘cock rooster’.3: Dutch and Flemish: genitivized patronymic from the personal name Cock a vernacular short form of Cornelius.4: Dutch: variant of Kok an occupational name for a cook.5: Amerindian (Mexico and Guatemala): Mayan name from a Castilianized form of a term denoting a species of pheasant-like bird.

Source : DAFN2 : Dictionary of American Family Names 2nd edition, ©2022 by Patrick Hanks and Oxford University Press