Family History and Genealogy Resources by Surname
Maxwell Surname Origin
One Macchus, in the eleventh century, obtained lands, on the Tweed, in Scotland, from Prince David, to which he gave the name of Macchus-ville, since corrupted to Maxwell. Maxwell is Macsual, in Gaelic, from Mac, son, and sual, small, little.
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.
Maxwell Surname Meaning and Family Facts
There is more to Maxwell family history than the origin of your surname:
A Maxwell Family History Thought:
'If man cares not for his roots, then how can he care for his branches?' --Doyle M Davis