_Frederico II GONZAGA _________________+
                                                | (1500 - 1540)                         
                       _Guglielmo GONZAGA ______|
                      | (1538 - 1587)           |
                      |                         |_Margherita of PALAIOLOGOS-MONTFERRAT _+
                      |                           (1510 - 1566)                         
 _Vincenzo I GONZAGA _|
| (1562 - 1611)       |
|                     |                          _Ferdinand I HABSBURG _________________+
|                     |                         | (1502 - 1564)                         
|                     |_Eleanor of HABSBURG ____|
|                       (1534 - 1594)           |
|                                               |_Anne of JAGIEŁŁO ___________________+
|                                                 (1503 - 1546)                         
|
|--Margherita of GONZAGA 
|  (1591 - 1631)
|                                                _Cosimo I de' MEDICI __________________+
|                                               | (1519 - 1574)                         
|                      _Francesco I de' MEDICI _|
|                     | (1541 - 1587)           |
|                     |                         |_Eleanor Alvarez ALBA _________________+
|                     |                           (1521 - 1562)                         
|_Eleanor de' MEDICI _|
  (1566 - 1611)       |
                      |                          _Ferdinand I HABSBURG _________________+
                      |                         | (1502 - 1564)                         
                      |_Joanna of HABSBURG _____|
                        (1546 - 1578)           |
                                                |_Anne of JAGIEŁŁO ___________________+
                                                  (1503 - 1546)