John inherited the estate of Bay Hall. He was knighted by King Henry III, who ruled from 1216 to 1276. He received the Culpeper Coat of Arms from King Henry III. Sir John expanded the Culpeper holdings in Langely, Boughton, East and West Farleigh, Brenchley, Turnbridge, Yalding, Malling and Shipboon. His only son and heir was Sir Thomas Culpeper.