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Siemowit IV of Masovia (1352-1426)

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Name variants

English Siemowit IV of Masovia
English Siemowit IV of Płock
International format Siemowit IV Mazowiecki
International format Siemowit IV Płocki

Gender

Male

Timeline

Birth

Date range 1352 - 1356

Death

21 January 1426


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1346-1429


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1408-1454
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