_Federico I GONZAGA ________+
                                              | (1441 - 1484)              
                       _Francesco II GONZAGA _|
                      | (1466 - 1519)         |
                      |                       |_Margaretha of WITTELSBACH _+
                      |                         (1442 - 1479)              
 _Ferrante I GONZAGA _|
| (1506 - 1557) m 1529|
|                     |                        _Ercole I of ESTE __________+
|                     |                       | (1431 - 1504)              
|                     |_Isabella of ESTE _____|
|                       (1474 - 1538)         |
|                                             |_Eleonora of TRASTÁMARA ___+
|                                               (1450 - 1493)              
|
|--Cesare I GONZAGA 
|  (1530 - 1574)
|                                              ____________________________
|                                             |                            
|                      _______________________|
|                     |                       |
|                     |                       |____________________________
|                     |                                                    
|_Isabella of CAPUA __|
   m 1529             |
                      |                        ____________________________
                      |                       |                            
                      |_______________________|
                                              |
                                              |____________________________