Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
BROOK
As described in historical dictionaries
Patronymica Britannica (1860)
BROOK. BROOKE. From residence near a stream. Its medieval forms are AteBroc, Atte-Broc, Attenbroke, &c., afterwards softened to A-Broke, and pluralised to Brooks and Brookes. Brooker and Brookman are simple variations of the same name.
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