Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
MCBAIN
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
The son of Bain. Bean or Ban, white, Donald Bean, Donald the white.
Surname type: From name of parent
Origin: Celtic
Region of origin: British Isles
Country of origin: Scotland
Religion of origin: Christian
Language of origin: Gaelic