Casimir I of Oświęcim
Casimir I | |
|---|---|
| Duke of Oświęcim, Toszek, Strzelin | |
Coat-of-arms of Upper Silesia (Opole, Oświęcim, Toszek, Strzelin, etc). | |
| Born | 1396 |
| Died | 7 April 1434 |
| Noble family | Silesian Piasts of Opole |
| Spouse(s) | Anna of Żagań Margareta of Opava-Ratibor |
| Issue | Wenceslaus I Przemysław Jan IV of Oświęcim |
| Father | Przemysław of Oświęcim |
| Mother | unknown |
Casimir I of Oświęcim (Polish: Kazimierz I Oświęcimski) (1396 – 7 April 1434) was a Duke of Oświęcim from 1406 (under regency until 1414) until his death in 1434, ruler over Toszek (from 1414 to 1434) and Strzelin (during 1416–1427).
He was the only child of Duke Przemysław of Oświęcim by his unknown wife.