_Bobone ORSINI _______+
                                            | (1100 - ....)        
                       _Orso ORSINI ________|
                      | (1127 - 1207)       |
                      |                     |_Crescenzio DI GAETA _
                      |                                            
 _Giangaetano ORSINI _|
| (1154 - 1232)       |
|                     |                      ______________________
|                     |                     |                      
|                     |_Gaetana DI GAETA ___|
|                                           |
|                                           |______________________
|                                                                  
|
|--Matteo Rosso ORSINI 
|  
|                                            ______________________
|                                           |                      
|                      _____________________|
|                     |                     |
|                     |                     |______________________
|                     |                                            
|_Oddo DI MONTICELLI _|
                      |
                      |                      ______________________
                      |                     |                      
                      |_____________________|
                                            |
                                            |______________________