Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
DUFFEY
As described in historical dictionaries
Patronymica Britannica (1860)
DUFFEY. Probably D'Auffay, a small tOAvn in Normandy, on the Diejpe and Rouen raihvaj In H.R. Dofi.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English