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| YEAR | DATE | EVENT | HEAD OF STATE |
| 1200 | Free Common | ||
| 1258 | Unione to Arezzo | ||
| 1261 | Free Common | ||
| 1323 | Lordship - dinasty Casali | sire Ranieri | |
| 1351 | sire Bartolomeo | ||
| 1363 | sire Francesco I and Nicola-Giovanni | ||
| 1378 | sire Nicola-Giovanni | ||
| 1384 | sire Uguccione-Urbano | ||
| 1400 | sire Francesco II | ||
| 1407 | sire Luigi-Battista | ||
| 1411 | Union to Florence |