_Edward II of Caernarvon _+
                                              | (1284 - 1327) m 1308     
                       _Edward III ___________|
                      | (1312 - 1377) m 1328  |
                      |                       |_Isabella de France ______+
                      |                         (1292 - 1358) m 1308     
 _Edmund Plantagenet _|
| (1341 - 1402) m 1372|
|                     |                        _William III 'the Good' __+
|                     |                       | (1280 - 1337) m 1305     
|                     |_Philippa of Hainault _|
|                       (1311 - 1369) m 1328  |
|                                             |_Jeanne de Valois ________+
|                                               (1294 - 1342) m 1305     
|
|--Edward Plantagenet 
|  (1373 - ....)
|                                              _Alfonso XI ______________+
|                                             | (1311 - 1350) m 1328     
|                      _Peter 'The Cruel' ____|
|                     | (1334 - 1369) m 1353  |
|                     |                       |_Maria ___________________+
|                     |                         (1313 - ....) m 1328     
|_Isabella ___________|
  (1355 - 1392) m 1372|
                      |                        _Juan Garciez de Padilla _
                      |                       |                          
                      |_Maria de Padilla _____|
                        (1335 - ....) m 1353  |
                                              |_Meria de Henestrona _____+