| YEAR | DATE | EVENT | HEAD OF STATE |
| 1309 | Duchy - dinasty Piasti | duke Corrado I | |
| 1366 | duke Corrado II | ||
| 1403 | duke Corrado III | ||
| 1412 | duke Corrado IV | ||
| 1418 | duke Corrado VI | ||
| 1427 | duke Corrado V | ||
| 1439 | duke Corrado VIII | ||
| 1444 | duke Corrado VII | ||
| 1452 | duke Corrado IX | ||
| 1471 | duke Corrado X | ||
| 1492 | Union to Duchy of Slesia |