Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
GAY
As described in historical dictionaries
Patronymica Britannica (1860)
GAY. O. Fr. §•«?", cheerful, merry. A Be Gay is found in H.R. (co. Oxon); but Le Gai and Le Gey are more common.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English