Siemomysl
10th-century duke of the Polans · Poland · On the map · Historical Figures · Lived 922 to c. 950
Siemomysł or Ziemomysł 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.
Siemomysl is read about 159 times a day, in 29 languages.
A typical day, 30 days to 15 October 2026
The middle day of the days counted, so one week of news cannot move it. The line under it is the last 87 days, one point a day.
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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.
