|
|
| YEAR | DATE | EVENT | HEAD OF STATE | |
| 920 | Earldom - dinastia Alidosi | earl Alidosio | ||
| 930 | earl Cornelio | |||
| 949 | earl Troilo Nordilio | |||
| 955 | earl Sigismondo | |||
| 960 | earl Nordilio | |||
| 975 | earl Bulgarello | |||
| 980 | earl Accarisio | |||
| 983 | earl Lelio Accarisio | |||
| 985 | earl Alberto of Cunio | |||
| 986 | dinasty Alidosi | earl Roberto Alidosio | ||
| 1001 | Free Common | |||
| 1010 | Lordship - dinasty Sassatelli | sire Corrado | ||
| 1029 | dinasty Alidosi | sire Ugolino | ||
| 1032 | sire Riccardo | |||
| 1046 | sire Raniero | |||
| 1054 | dinasty Nascimbene | sire Gherardo | ||
| 1059 | Free Common | |||
| 1178 | Lordship - dinasty Guidi | sire earl Guido Guerra II | ||
| 1181 | Free Common | |||
| 1262 | Bologna Territory | |||
| 1290 | 29 november | Lordship - dinasty Alidosi | sire Alidosio | |
| 1293 | Bologna Territory | |||
| 1296 | Lordship | sire Uguccione della Faggiuola | ||
| 1299 | Bologna Territory | |||
| 1322 | Faenza Territory | |||
| 1327 | Church Territory | |||
| 1335 | Lordship - dinasty Alidosi | sire Lippo | ||
| 1346 | 17 october | sire and papal vicaire Lippo | ||
| 1350 | 29 dicembre | sire and papal vicaire Roberto | ||
| 1362 | 29 november | sire and papal vicaire Azzo | ||
| 1372 | sire and papal vicaire Bertrando | |||
| 1391 | 11 november | sire and papal vicaire Ludovico | ||
| 1424 | 1 february | dinastia Visconti | sire Filippo Maria duke of Milano | |
| 1426 | Church Territory | |||
| 1439 | Lordship - dinasty Manfredi | sire Guido Antonio | ||
| 1448 | sire Taddeo | |||
| 1473 | 11 may | dinasty Sforza | siress Caterina | |
| 1474 | july | dinasty Riario | sire Girolamo | |
| 1488 | 30 april | sire Ottaviano | ||
| 1499 | 27 november | dinasty Borgia | sire Cesare | |
| 1503 | 3 december | Union to Church State |