_Averardo de' MEDICI _+
                                               | (1320 - 1363)        
                         _Giovanni de' MEDICI _|
                        | (1360 - 1428) m 1386 |
                        |                      |_Jacopa SPINI ________
                        |                                             
 _Cosimo de' MEDICI ____|
| (1389 - 1464)         |
|                       |                       ______________________
|                       |                      |                      
|                       |_Piccarda BUERI ______|
|                         (1368 - 1433) m 1386 |
|                                              |______________________
|                                                                     
|
|--Piero I de' MEDICI 
|  (1416 - 1469)
|                                               ______________________
|                                              |                      
|                        ______________________|
|                       |                      |
|                       |                      |______________________
|                       |                                             
|_Contessina de' BARDI _|
  (1390 - 1473)         |
                        |                       ______________________
                        |                      |                      
                        |______________________|
                                               |
                                               |______________________