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| YEAR | DATE | EVENT | HEAD OF STATE |
| 1110 | Republic | ||
| 1287 | Lordship - dinasty Beccaria | sire Manfredo | |
| 1300 | dinasty Langosco | sire Filippone | |
| 1311 | dinasty Savoia | sire Filippo I prince of Acaia | |
| 1312 | dinasty Angiņ | sire Roberto King of Napoli | |
| 1315 | dinasty Visconti | sire Matteo | |
| 1322 | sire Galeazzo | ||
| 1327 | dinasty Gruenenstein | sire Enrico | |
| 1331 | dinasty Luxemburg | sire Giovanni King of Boemia | |
| 1332 | dinasty Beccaria | sire Musso | |
| 1343 | sire Castellino | ||
| 1357 | dinasty Paleologo | sire John marquois of Monferrato | |
| 1359 | Union to Lordship of Milan |