Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
ALFREY
As described in historical dictionaries
Patronymica Britannica (1860)
ALFREY. Probably a corruption of Alfred ; or it may be local, though I cannot discover any place so designated. The name belongs, I think, almost exclusively to Sussex. "The forms iElfer, Alfere, and Alferus occur before 1086 in that county. Domesd.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English