Category:Siemowit IV, Duke of Masovia

**Siemowit IV**
	Duke of Masovia
	Upload media
	Wikipedia
Date of birth	1352
Date of death	21 January 1426 (statement with Gregorian date earlier than 1584); Gostynin
Place of burial	Płock Cathedral;
Occupation	aristocrat;
Noble title	knyaz;
Family	Piast dynasty;
Father	Siemowit III, Duke of Masovia;
Mother	Euphemia of Opava;
Sibling	Margaret of Masovia; Euphemia of Masovia; Janusz I of Warsaw; Henry of Masovia;
Child	Euphemia of Masovia; Maria of Masovia; Cymburgis of Masovia; Władysław I of Masovia; Trojden II of Płock; Casimir II of Masovia; Amelia of Masovia; Jadwiga of Masovia; Aleksander Mazowiecki; Catherine of Masovia; Siemowit V of Masovia;
Spouse	Alexandra of Lithuania (1387–);
Authority file
	Q1980579; VIAF ID: 18078851; GND ID: 121434397; Library of Congress authority ID: n99262069; PLWABN ID: 9810544879205606
	Reasonator; Scholia; Wikidocumentaries; PetScan; statistics; WikiMap; Locator tool; KML file; Search depicted;

Subcategories

This category has the following 2 subcategories, out of 2 total.

The following 4 files are in this category, out of 4 total.