Wilhelm was born before 1290, the son of Hugo III von Montfort-Tettnang and Margareta von Gundelfingen-Hellenstein. The place is not known.
He died in BET 06 JAN 1348 AND 08 OCT 1350. The place is not known.
He had three marriages/partners. His first wife was Elisabeth von Schlüsselberg, who he married on BEF 26 MAY 1307. The place has not been found. They had no known children.
His second wife was Anna Magdalena von Schwarzenberg, who he married on AFT 6 DEC 1307. The place has not been found. They had no known children.
His third wife was Kunigunde von Rappoltstein, who he married in BET 1313 AND 1315. The place has not been found. Their six known children were Heinrich III (<1349-<1408), Mechtild (?-1344), Wilhelm II (?-c1373), Hugo VII (?-1338), Anna (?-?) and Ulrich (?->1353).
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Wilhelm II von Montfort-Bregenz |
Hugo III von Montfort-Tettnang |
Hugo II von Montfort-Bregenz |
Hugo I von Montfort-Bregenz |
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NN von Eschenbach-Schnabelburg |
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Elisabeth von Berg-Schelklingen |
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Margareta von Gundelfingen-Hellenstein |
Ulrich II von Gundelfingen-Hellenstein |
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Adelheid von Albeck |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Birth | BEF 1290 |
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| Death | BET 6 JAN 1348 AND 8 OCT 1350 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | graf von Montfort-Bregenz |