Casimir of Masovia
Casimir I of Warsaw, was a Polish prince member of the House of Piast, Duke of Czersk during 1341-1349 jointly with his brother, since 1345 ruler over Rawa Mazowiecka jointly with his brother, since 1349 sole ruler over Warsaw, since 1351 sole ruler over Sochaczew, Polish vassal since 1351.
From *.wikipedia.org,
General Info
.
Male
Date of Birth
January 1st, 1320
Age
706
Date of Death
November 26th, 1355
Died Aged
35
Star Sign
Capricorn
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Relatives
Eufemia of Masovia
Sister
Siemowit III, Duke of Masovia
Brother
Trojden I, Duke of Masovia
Father
Maria of Galicia
Mother
Bolesław Jerzy of Mazovia
Brother
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