_Matteo ORSINI _________+
                                             |                        
                        _Orso ORSINI ________|
                       |                     |
                       |                     |_Mataleona of UNKNOWN __
                       |                                              
 _Girodano ORSINI _____|
|                      |
|                      |                      ________________________
|                      |                     |                        
|                      |_____________________|
|                                            |
|                                            |________________________
|                                                                     
|
|--Francesco ORSINI 
|  (1353 - 1404)
|                                             _Romano ORSINI _________+
|                                            | (1273 - 1326)          
|                       _Roberto ORSINI _____|
|                      | (1294 - 1344)       |
|                      |                     |_Anastasia of MONTFORT _+
|                      |                       (.... - 1306)          
|_Anastasia of ORSINI _|
  (1333 - 1353)        |
                       |                      ________________________
                       |                     |                        
                       |_Sibylle of BAUX ____|
                         (.... - 1375)       |
                                             |________________________