Family History and Genealogy Resources by Surname
McWithy Surname Origin
The son of the weaver, from the Gaelic Mac, a son, and guithe, Cornish British, a weaver. In the Welsh, gwehydd, a weaver, quethy, Cornish British, to weave.
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.
McWithy Surname Meaning and Family Facts
There is more to McWithy family history than the origin of your surname:
A McWithy Family History Thought:
'The only thing new in the world is the history you don't know.' --Harry S. Truman