Family History and Genealogy Resources by Surname
Mann Surname Origin
(Origin German) Gentleman or master, the same as Herr. Man, in the Welsh, signifies freckled or spotted; also, a spot, a place.
Source: An Etymological Dictionary of Family and Christian Names With an Essay on their Derivation and Import; Arthur, William, M.A.; New York, NY: Sheldon, Blake, Bleeker & CO., 1857.
Mann Surname Meaning and Family Facts
There is more to Mann family history than the origin of your surname:
A Mann Family History Thought:
'Every man is his own ancestor, and every man his own heir. He devises his own future, and he inherits his own past.' -- H. F. Hedge