Masovian Piasts

Siemowit IV

Also known as: Ziemowit IV, Siemowit IV Młodszy, Siemowit IV the Younger

Born:: 1353/1356
Died:: 06.01.1426
Place of death:: Gostynin
Place of burial:: Cathedral Basilica of the Assumption of the Blessed Virgin Mary in Płock

Titles

Relations

father: Siemowit III
mother: Eufemia of Opawa
concubinage: N.N. (concubine of Siemowit IV, mother of Mikłusz)
son: Miklusz
wife: Alexandra of Lithuania
son: Siemowit V

Bibliography

Janusz Grabowski, Dynastia Piastów mazowieckich, Avalon, Kraków 2012