Joan de Cornwall 1286–1342

Family with parents
father Parents Richard “King of the Romans” Plantagenet Joan de Valletort	Richard “Earl of Cornwall” de Cornwall 1252–1280
mother Parents (unknown)	Joan St. Owen 1260–1316
herself Family Sir John Howard Sir Admiral John Howard	Joan de Cornwall 1286–1342
Family with Sir John Howard
husband Parents (unknown)	Sir John Howard 1276–1331
herself Parents Richard “Earl of Cornwall” de Cornwall Joan St. Owen	Joan de Cornwall 1286–1342
son Family Alice de Boys Sir Robert Howard	Sir Admiral John Howard 1310–1347

James Bly Research