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| YEAR | DATE | EVENT | HEAD OF STATE |
| 1478 | Principality - dinasty Gonzaga | prince Gianfrancesco marquois of Sabbioneta | |
| 1496 | prince Ludovico marquois of Sabbioneta | ||
| 1540 | 1 july | prince Vespasiano duke of Sabbioneta | |
| 1591 | 26 february | prince Giulio Cesare | |
| 1609 | prince Scipione | ||
| 1670 | prince Ferdinando | ||
| 1672 | prince Gian Francesco II | ||
| 1703 | Union to Duchy of Mantova |