The English surname Berkley, also found in Scotland and Ireland, is of habitational origin. the name is derived from the place name Berkeley found in Gloucestershire in the south of England. The name is derived from the Old English beorce léah meaning " birch lea ". The earliest record of the name is i the Domesday book in 1086. Today there are approximately 4,500 bearers of the surname Berkley living in The United States.