| YEAR | DATE | EVENT | HEAD OF STATE |
| 1241 | Duchy - dinasty Piasti | duke Corrado I | |
| 1274 | duke Enrico III | ||
| 1309 | duke Primko | ||
| 1331 | duke Enrico V | ||
| 1369 | duke Enrico VII | ||
| 1395 | duke Enrico VIII | ||
| 1397 | duke Enrico X | ||
| 1423 | duke Enrico IX | ||
| 1467 | duke Enrico XI | ||
| 1476 | Union to Duchy of Slesia |