The English surname Brook, also found in Scotland and Ireland, is of locative origin meaning somebody who lived by a brook or a small stream. The first written reference to the name is in 1208 in Surrey, England when William de la Broke is recorded. In Scotland the first reference is in Aberdeen in 1483. The name is first recorded in the New World in 1634 when Robert Brook arrived in New England. Today there are approximately 4,500 bearers of the name Brook living in the United States.