John "of Gaunt" of England, b: 1340 - Abbaye St Bavon, Belgium


			^{Edward II of England}^{b.1284 Carnarvon Castle, Wales d.1327 Berkeley, England}

		^{Edward III Plantagenet}^{b.1312 Windsor Castle, England d.1377 Sheen Palace, England}	^{Isabel Capet of France}^{b.1292 Paris, Seine, France d.1358 Hertford Castle, England}

^{Henry IV Plantagenet}^{b.1366 Bolingbroke Cas, England d.1413 Westminster Ab, England}	^{John "of Gaunt" of England}^{b.1340 Abbaye St Bavo, Belgium d.1398 Leicester Castle, England}		^{William III de Avesnes}^{b.1286 Avesnes, France d.1337 Valenciennes, France}

^{John "Fairborn" Beaufort}^{b.1371 Chateau de Beauf, France d.1409 London, England}		^{Philippa de Hainault}^{b.1311 Mons, France d.1369 Windsor Castle, England}	^{Jeanne de Valois}^{b.1294 Longpont, Aisne, France d.1342 Fontenelle, Yonne, France}

^{Joan de Beaufort}^{b.1375 Chateau de Beauf, France d.1440 Howden, England}

^{Henry Beaufort}^{b.1375 Chateau de Beauf, France d.1447 Winchester, England}		^{Payn de Roet}^{b.1310 Hainault, Belgium d.}

	^{Catherine de Roet}^{b.1350 Picardy, Somme, France d.1403 Lincoln, England}