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:
'If you would not be forgotten,
As soon as you are dead and rotten,
Either write things worthy of reading,
Or do things worthy of writing.' --Benjamin Franklin, May 1738