__
                                               |  
                          _Leo III ISAURIA ____|
                         | (0685 - 0741)       |
                         |                     |__
                         |                        
 _Constantine V ISAURIA _|
| (0718 - 0775)          |
|                        |                      __
|                        |                     |  
|                        |_Maria of UNKNOWN ___|
|                          (.... - 0718)       |
|                                              |__
|                                                 
|
|--Leo IV ISAURIA 
|  (0749 - 0780)
|                                               __
|                                              |  
|                         _Bihar of KHAZAR ____|
|                        |                     |
|                        |                     |__
|                        |                        
|_Tzitzak of KHAZAR _____|
  (.... - 0750)          |
                         |                      __
                         |                     |  
                         |_____________________|
                                               |
                                               |__