Johann was born about 1287, the son of Ulrich III von Helfenstein and Adelheid von Graisbach. The place is not known.
He died before 01 JUN 1340 in Weisensteig, Donaukreis, Württemburg.
His wife was Adelheid von Hohenlohe-Weikersheim, who he married on BEF 30 SEP 1313. The place has not been found. Their four known children were Ulrich V (X, XI) (c1314-1372), Agnes (c1320-c1382), Anna (?-c1350) and Katharina (?->1387).
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Johann I von Helfenstein-Wiesensteig |
Ulrich III von Helfenstein |
Ulrich II von Helfenstein |
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Willeburg von Dillingen |
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Adelheid von Graisbach |
Berthold II von Graisbach |
Heinrich IV von Lechsgemünd |
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Elisabeth von Hirschberg |
Gebhard V (I, II) von Hirschberg |
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Agnes Matilde von Württemberg |
| Event | Date | Details | Source | Multimedia | Notes | ||
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| Birth | ABT 1287 |
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| Death | BEF 1 JUN 1340 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | graf von Helfenstein in Güssenburg und Kaltenburg |