Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
GILKS
As described in historical dictionaries
Patronymica Britannica (1860)
GILKS. See Gilbert. This name was so common in the northern part of Oxfordshire in the last century, that, on the enclosure, in 1774-, of some lands in the parish of Swalcliffe, it was necessary to describe six claimants thus : —