|
| YEAR | DATE | EVENT | HEAD OF STATE |
| 1168 | Free Common | ||
| 1260 | Lordship - dinasty Pallavicino | sire Oberto sire of Pavia | |
| 1266 | dinasty Anjou | sire Carlo I king of Naples | |
| 1269 | dinasty Aleramici | sire Guglielmo VI marquois of Monferrato | |
| 1292 | dinasty Visconti | sire arcibishop Ottone sire of Milan | |
| 1295 | august | sire Matteo sire of Milan | |
| 1302 | Free Common | ||
| 1314 | Lordship - dinasty Anjou | sire Roberto king of Neaples | |
| 1315 | dinasty Visconti | sire Matteo I sire of Milan | |
| 1322 | 26 june | sire Galeazzo I sire of Milan | |
| 1327 | 5 july | sire Azzone sire of Milan | |
| 1339 | 17 august | sire Luchino | |
| 1349 | 24 january | sire John | |
| 1354 | 6 october | sire Matteo II | |
| 1355 | 26 september | sire Galeazzo II | |
| 1378 | 4 august | sire Bernaḅ | |
| 1385 | 6 may | sire Gian Galeazzo duke of Milan | |
| 1402 | 3 september | sire Facino Cane | |
| 1412 | Union to Duchy of Milan | ||
| 1703 | Union to Principality of Piemonte |