Demeter was the son of László Széchy de Rimaszécs and Anna Lórántffy de Serke. The date and place of his birth have not been found.
His wife was Petronella Serényi de Kisserény. They were married, but the date and place have not been found. Their only known child was Anna (?-?).
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László Széchy de Rimaszécs |
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Lóránd Lórántffy de Serke |
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