_Asen of ASEN ________
                                                   |                      
                         _Ivan I ASEN _____________|
                        | (.... - 1196) m 1183     |
                        |                          |______________________
                        |                                                 
 _Ivan II ASEN _________|
| (1190 - 1241)         |
|                       |                           ______________________
|                       |                          |                      
|                       |_Helen of UNKNOWN ________|
|                          m 1183                  |
|                                                  |______________________
|                                                                         
|
|--Michael II ASEN 
|  (1239 - 1256)
|                                                   _John KOMNENOSDOUKAS _+
|                                                  | (1125 - 1200)        
|                        _Theodore KOMNENOSDOUKAS _|
|                       | (1180 - 1253)            |
|                       |                          |_Zoe of MAKRODOUKAS __+
|                       |                                                 
|_Irene KOMNENOSDOUKAS _|
                        |
                        |                           ______________________
                        |                          |                      
                        |_Maria PETRALIPHAS _______|
                                                   |
                                                   |______________________