________________________
                                                     |                        
                            _Enguerrand VI of COUCY _|
                           | (1313 - 1346)           |
                           |                         |________________________
                           |                                                  
 _Enguerrand VII of COUCY _|
| (1340 - 1396)            |
|                          |                          _Leopold I HABSBURG ____+
|                          |                         | (1290 - 1325) m 1315   
|                          |_Catherine of HABSBURG __|
|                            (1319 - 1349)           |
|                                                    |_Catherine of SAVOY ____+
|                                                      (1284 - 1336) m 1315   
|
|--Marie I of COUCY 
|  (1366 - 1404)
|                                                     _Edward II PLANTAGENET _+
|                                                    | (1284 - 1327) m 1307   
|                           _Edward III PLANTAGENET _|
|                          | (1312 - 1377) m 1327    |
|                          |                         |_Isabella of CAPET _____+
|                          |                           (1292 - 1358) m 1307   
|_Isabel PLANTAGENET ______|
  (1332 - 1379)            |
                           |                          _William III AVESNES ___+
                           |                         | (1286 - 1337)          
                           |_Philippa of AVESNES ____|
                             (1311 - 1369) m 1327    |
                                                     |_Joan of VALOIS ________+
                                                       (1294 - 1341)