_Cesare I GONZAGA ___________+
                                             | (1530 - 1574) m 1560        
                       _Ferrante II GONZAGA _|
                      | (1563 - 1630)        |
                      |                      |_Camilla BORROMEO ___________
                      |                         m 1560                     
 _Cesare GONZAGA _____|
| (1592 - 1631)       |
|                     |                       _____________________________
|                     |                      |                             
|                     |_Vittoria of DORIA ___|
|                       (1569 - 1618)        |
|                                            |_____________________________
|                                                                          
|
|--Ferrante GONZAGA 
|  (1618 - 1677)
|                                             _Paolo Giordano ORSINI ______+
|                                            | (1541 - 1585) m 1558        
|                      _Virginio ORSINI _____|
|                     | (1572 - 1615) m 1589 |
|                     |                      |_Isabella Romola de' MEDICI _+
|                     |                        (1542 - 1576) m 1558        
|_Isabella of ORSINI _|
  (1597 - 1623)       |
                      |                       _____________________________
                      |                      |                             
                      |_Flavia DAMASCENI ____|
                        (1574 - 1606) m 1589 |
                                             |_____________________________