Soběslav I was Duke of Bohemia from 1125 until his death in 1140. He was a member of the Přemyslid dynasty, the youngest son of Vratislaus II, by his third wife Świętosława of Poland.
- Position held
- Duke of Bohemia
- Born
- 1075, 1090, 1086
- Died
- February 14, 1140, 1140