Siemowit of Bytom
 |
Siemowit | |
|---|---|
| Duke of Bytom, Gliwice | |
| Born | 1292 |
| Died | aft. 1 July 1342 |
| Noble family | Silesian Piasts |
| Father | Casimir of Bytom |
| Mother | Helena (of Galicia?) |
Siemowit of Bytom (Polish: Siemowit bytomski; (1292 – aft. 1 July 1342), was a Duke of Bytom during 1312–1316 and Duke of Gliwice from 1340 until his death.
He was the third son of Duke Casimir of Bytom by his wife Helena.
It's unknown why after his death in 1312, his father left Siemowit the most extensive part of his Duchy,
John of Luxembourg in Opawa. This event demonstrated that, whatever the reasons why Siemowit lost his sovereignty over Bytom in 1316, at the end of the 1320s there is a full reconciliation between the brothers. Siemowit was then mentioned again around 1340 in a document of the Bishop of Wrocław, Przecław z Pogorzeli, where he is named Duke of Gliwice
. This is the last notice about Siemowit as a living person. He died between 1342 and 1355, probably closer to 1342. He died unmarried and childless, and it is unknown where he was buried.
After his death, the city of Gliwice returned to the Duchy of Bytom.