As described in historical dictionaries

An Etymological Dictionary of Family and Christian Names (1857)

Willy's, the son of Willy, the "s" being added for son.

Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.


Surname type: Diminutive

Origin: English

Region of origin: British Isles

Country of origin: England

Religion of origin: Christian

Language of origin: English

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