| YEAR | DATE | EVENT | HEAD OF STATE |
| 975 | Count - dinasty Blois | earl Oddone | |
| 995 | x | ||
| 1132 | dinasty Capetingi-Dreux | earl Roberto I | |
| 1184 | earl Roberto II | ||
| 1218 | earl Roberto III | ||
| 1234 | earl John I | ||
| 1249 | earl Roberto IV | ||
| 1282 | earl John II | ||
| 1309 | earl Roberto V | ||
| 1329 | earl John III | ||
| 1331 | earl Pietro III | ||
| 1345 | earles Giovanna I | ||
| 1346 | earles Giovanna II | ||
| 1355 | x | ||
| 1377 | Count of King of France | ||
| 1393 | dinasty Albret | earl Carlo I | |
| 1415 | earl Carlo II | ||
| 1442 | earles Giovanna III | ||
| 1444 | dinasty Capetingi-Dreux | earl Francesco II duke of Bretagna | |
| 1477 | dinasty Albret | earl John IV | |
| 1524 | Union to Kingdom of France |