Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
KNOCK
As described in historical dictionaries
Patronymica Britannica (1860)
KNOCK. A hill ; a knoll. Celtic and Gaelic, cnoc, coUis. De la Knocke. H.R. See Knox.
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