Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
EVORS
As described in historical dictionaries
Patronymica Britannica (1860)
EVORS. EVERS. Probably the same as Mac Ivor, though Ferguson derives them from the A-Sax. cfor or efyr. a boar.