Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
HOLYOAK
As described in historical dictionaries
Patronymica Britannica (1860)
HOLYOAK. From residence near an oak to which some sanctity was attached. The latinization in charters is, De Sacra Quercu.
Surname type: Location or geographical feature
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English