| YEAR | DATE | EVENT | HEAD OF STATE |
| 1274 | Duchy - dinasty Piasti | duke Corrado | |
| 1304 | duke Enrico IV | ||
| 1342 | duke Enrico V duke of Glogau | ||
| 1369 | duke Enrico VI | ||
| 1393 | duke Enrico VIII duke of Glogau | ||
| 1397 | duke John | ||
| 1439 | duke Rodolfo | ||
| 1454 | duke Baldassarre | ||
| 1472 | duke John II | ||
| 1504 | Union to Duchy of Slesia |