Siemomysl: Biography, Facts and Career
Who is Siemomysl? An evergreen, sourced profile: biography, key facts and career.

Siemomysł or Ziemomysł (c. 910 – c. 960) was the third duke of the Polans and the father of Poland's first Christian ruler, Mieszko I. A member of the Piast dynasty, he was listed by Gallus Anonymous in his Gesta principum Polonorum as the son of Lestek, the second known duke of the Polans. According to Gallus' account and historical research, Siemomysł has been credited with leaving the lands of the Polans, Goplans and Masovians to his son Mieszko I, who further expanded them during his reign.
Quick facts about Siemomysl
- Full name: Siemomysl
- Born: 0922-01-01
- Nationality: Poland
- Known as: Royal
- Wikidata ID: Q161831
Profile compiled from public Wikipedia and Wikidata data. Details can change over time.
Frequently asked questions
Who is Siemomysl?
Siemomysł or Ziemomysł (c. 910 – c. 960) was the third duke of the Polans and the father of Poland's first Christian ruler, Mieszko I.
What nationality is Siemomysl?
Siemomysl is Poland.
When was Siemomysl born?
Siemomysl was born on 0922-01-01.



