Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
ELOY
As described in historical dictionaries
Patronymica Britannica (1860)
SAINT ELOY. Ste. Eloi is in the arrondissement of Andeli in Normandy. Chaucer's Prioress used to swear by this saint : —