Sir John de Wingfield (d. circa 1361) of Wingfield Castle in Suffolk was chief administrator to Edward the Black Prince (1330-1376). He and both his brothers fought at Crécy in 1346. He fought in the Normandy campaign from 1347-48. He was appointed 'governor of the prince's business' (in effect business-manager) to Edward the Black Prince round about 1351. In 1356 Wingfield fought at Poitiers capturing the head of the French King John II's bodyguard, Sire D'Aubigny. Edward III of England purchased this captive from Wingfield for £833. Wingfield died in about 1361, possibly of the second outbreak of the Black Death.