Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
ROOKER
As described in historical dictionaries
Patronymica Britannica (1860)
ROOKER. To rook is to cheat. Teutonic rU'Chcn; Su. Gothic ryclia. A 'rookery' is a nest of dishonest people. Hence, I am afraid the original Mr. Rooker was not remarkable for his honesty. H.R. Le Roker.
Surname type: Occupational name
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English