Herdegen was the son of Hartnid III von Pettau and Kunigunde von Liechtenstein. The date and place of his birth have not been found.
He died in BET 1343 AND 1352. The place is not known.
His wife was Klara von Görz. They were married, but the date and place have not been found. Their only known child was Hartnid V (c1309-c1385).
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Herdegen I von Pettau |
Hartnid III von Pettau |
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Kunigunde von Liechtenstein |
Otto III von Liechtenstein-Murau |
Ulrich I von Liechtenstein |
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Perchta von Weißenstein |
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Diemud von Liechtenstein |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Death | BET 1343 AND 1352 |
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