Last name BRAUN: origin and meaning

Braun : 1: German and Jewish (Ashkenazic): nickname from German braun ‘brown’ (Middle High German brūn) referring to the color of the hair complexion or clothing.2: German: from the personal name Bruno which was borne by the Dukes of Saxony among others from the 10th century or before. It was also the name of several medieval German and Italian saints including Saint Bruno the founder of the Carthusian order (1030–1101) who was born in Cologne. See also Brun.

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