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Siemowit I Piast of Masovia, Duke of Masovia, Duke of Czersk, Duke of Sieradz, was born circa 1213 to Konrad of Poland (c1188-1247) and Agafia of Rus (c1192-c1248) and died 23 June 1262 of unspecified causes. He married Pereyaslava Daniilovna of Halych (c1231-1283) 1248 JL . Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Rollo of Normandy (860-932)/s.



Children



Offspring of Siemowit I of Masovia and Pereyaslava Daniilovna of Halych (c1231-1283)
Name Birth Death Joined with
Konrad II of Masovia (c1249-1294) 1249 1294 Czerwińsk Hedwig of Poland (c1252-aft1280)
Boleslaus II of Masovia (c1251-1313) 1251 20 April 1313 Sophia of Lithuania Sophia of Lithuania Kunigunde of Bohemia (1265-1321)
Salomea of Masovia (?-1301)










Residences






Footnotes (including sources)

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