_Cosimo de' MEDICI ____+
                                              | (1389 - 1464)         
                       _Piero I de' MEDICI ___|
                      | (1416 - 1469) m 1444  |
                      |                       |_Contessina de' BARDI _
                      |                         (1390 - 1473)         
 _Lorenzo de' MEDICI _|
| (1448 - 1492) m 1469|
|                     |                        _______________________
|                     |                       |                       
|                     |_Lucrezia TORNABOUNI __|
|                       (1427 - 1482) m 1444  |
|                                             |_______________________
|                                                                     
|
|--Lucrezia Maria Romola de' MEDICI 
|  (1470 - 1553)
|                                              _Orso ORSINI __________+
|                                             | (1372 - 1424)         
|                      _Jacopo ORSINI ________|
|                     | (1424 - 1482)         |
|                     |                       |_Lucrezia of CONTI ____
|                     |                         (1375 - 1427)         
|_Clarice ORSINI _____|
  (1453 - 1488) m 1469|
                      |                        _______________________
                      |                       |                       
                      |_Maddalena of UNKNOWN _|
                                              |
                                              |_______________________