Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
MANN
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Ger.) Gentleman or master, the same as Herr. Man, in the Welsh, signifies freckled or spotted; also, a spot, a place.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English