Category:Siemowit IV of Masovia
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Duke of Masovia
|Date of birth||1352|
|Date of death||21 January 1426 (statement with Gregorian date earlier than 1584)|
|Place of burial|
This category has only the following subcategory.
Media in category "Siemowit IV of Masovia"
The following 3 files are in this category, out of 3 total.