Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
RANDOLF
As described in historical dictionaries
Patronymica Britannica (1860)
RANDOLF. RANDOLriL The baptismal name. It has given rise to many diminutives, as Randoll, Randall, Rankin, Banecock, Rands, Ranson, Hankin, Hanks, Haukinson, Hankey, &c.