Siemowit I of Masovia

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Siemowit I of Masovia was a 13th-century Polish duke from the Piast dynasty who ruled parts of Masovia and played a key role in the regional politics of medieval Poland.

All labels observed (1)

Label Occurrences
Siemowit I of Masovia canonical 4

How this entity was disambiguated

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Piasts of Płock notableMember Siemowit I of Masovia
Casimir I of Kuyavia sibling Siemowit I of Masovia
Bolesław II of Masovia sibling Siemowit I of Masovia
Duke of Łęczyca hasTitleHolder Siemowit I of Masovia