_Romano ORSINI _________+
                                            | (1273 - 1326)          
                       _Roberto ORSINI _____|
                      | (1294 - 1344)       |
                      |                     |_Anastasia of MONTFORT _+
                      |                       (.... - 1306)          
 _Nicolo ORSINI ______|
| (1331 - 1398)       |
|                     |                      ________________________
|                     |                     |                        
|                     |_Sibylle of BAUX ____|
|                       (.... - 1375)       |
|                                           |________________________
|                                                                    
|
|--Roberto ORSINI 
|  (1360 - 1393)
|                                            ________________________
|                                           |                        
|                      _____________________|
|                     |                     |
|                     |                     |________________________
|                     |                                              
|_Jeanne of GORIZIA __|
  (1322 - 1379)       |
                      |                      ________________________
                      |                     |                        
                      |_____________________|
                                            |
                                            |________________________