_Matteo Rosso ORSINI _+
                                              |                      
                       _Gentile I ORSINI _____|
                      | (1200 - 1246)         |
                      |                       |_Perna CAETANI _______
                      |                                              
 _Orso ORSINI ________|
|                     |
|                     |                        ______________________
|                     |                       |                      
|                     |_Constanza of UNKNOWN _|
|                                             |
|                                             |______________________
|                                                                    
|
|--Napoleone ORSINI 
|  
|                                              ______________________
|                                             |                      
|                      _______________________|
|                     |                       |
|                     |                       |______________________
|                     |                                              
|_Jacopa SAVELLI _____|
                      |
                      |                        ______________________
                      |                       |                      
                      |_______________________|
                                              |
                                              |______________________