János was the son of István Gyulaffy de Rátót and Dorottya Rozgonyi. The date and place of his birth have not been found.
His wife was Dorottya Choron de Devecser. They were married, but the date and place have not been found. They had no known children.
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Pető Gersei |
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Osvald Rozgonyi |
Osvald Rozgonyi |
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| Association | Relationship |
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| Katalin Fánchy de Gordova | mother? |