| | Duke John of Gaunt 1340–1399 Duchess Catherine de Roet 1350–1403 Blanche Plantagenet 1341–1368 | | | | King Edward III of England 1312–1377 Philippa of Hainault 1311–1369 | | | | King Edward II of England 1284–1327 Princess Isabelle of France 1292–1358 | | |
| | | Earl William III de Avesnes 1286–1337 Jeanne de Valois 1294–1342 | | |
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| | | Sir Payne Guienne de Roet 1310–… Countess Catherine de Avesnes 1320–1375 | | | | Sir Payne de Roet 1275–1322 Lady Maria Christina de Hainault 1280–1375 | | |
| | | Earl William III de Avesnes 1286–1337 Jeanne de Valois 1294–1342 | | |
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