Eufemia was born before 1420, the daughter of Bolesław III von Massow and Anna Ivanovna Holczanska. The place is not known.
She died about 1436. The place is not known.
Her husband was Michael Bolesław of Lithuania, who she married in ABT 1435. The place has not been found. They had no known children.
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Eufemia von Massow |
Bolesław III von Massow |
Janusz I von Massow |
Ziemowit III von Massow |
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Eufemie Opavská |
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Danuta Anna of Lithuania |
Kęstutis |
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Birutė |
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Anna Ivanovna Holczanska |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Birth | BEF 1420 |
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| Death | ABT 1436 |
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