Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
ALCOCK
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
From Hal or Al, a nickname for Henry; and cock, a termination meaning little, a diminutive, the same as ot or kin; little Hal or Al, so Wilcox, little Will, and Simcox, little Sim, etc.
Patronymica Britannica (1860)
ALCOCK. (See termination Cock). A
Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
Surname type: Diminutive
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English