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 |