Johann was born in BET 1296 AND 1300, the son of Henryk III von Schlesien-Glogau and Mathilde von Braunschweig-Lüneburg. The place is not known.
He died in BET 07 OCT 1361 AND 1365. The place is not known.
His wife was Margarete von Pommern-Wolgast. They were married, but the date and place have not been found. They had no known children.
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Johann I von Steinau |
Henryk III von Schlesien-Glogau |
Konrad I von Schlesien-Glogau |
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Salomea Odonicówna Piast |
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Mathilde von Braunschweig-Lüneburg |
Albrecht I von Braunschweig-Lüneburg |
Otto I von Braunschweig-Lüneburg |
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Mathilde von Brandenburg |
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Alessine di Montferrato |
Bonifacio II di Montferrato |
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Margherita di Savoia |
| Event | Date | Details | Source | Multimedia | Notes |
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| Birth | BET 1296 AND 1300 |
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| Death | BET 7 OCT 1361 AND 1365 |
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