_________________________
                                                  |                         
                       _Mitso ASEN _______________|
                      | (.... - 1278)             |
                      |                           |_________________________
                      |                                                     
 _Ivan III ASEN ______|
| (1259 - 1303)       |
|                     |                            _Ivan II ASEN ___________+
|                     |                           | (1190 - 1241)           
|                     |_Maria of ASEN ____________|
|                                                 |
|                                                 |_Irene KOMNENOSDOUKAS ___+
|                                                                           
|
|--Constantine ASEN 
|  
|                                                  _Andronikos PALAIOLOGOS _+
|                                                 | (1190 - 1248)           
|                      _Michael VIII PALAIOLOGOS _|
|                     | (1224 - 1282)             |
|                     |                           |_Theodora PALAIOLOGOS ___+
|                     |                                                     
|_Irene PALAIOLOGOS __|
  (1256 - 1328)       |
                      |                            _John Doukas VATATZES ___+
                      |                           |                         
                      |_Theodora Doukas VATATZES _|
                        (1240 - 1302)             |
                                                  |_Eudokia ANGELOS ________+