Katalin was the daughter of László Thoroczkay de Toroczkószentgyörgy and Zsuzsanna Tholdalagi de Nagy-Iklód. The date and place of her birth have not been found.
She had two marriages/partners. Her first husband was András Ugron de Ábránfalva. They were married, but the date and place have not been found. They had no known children.
Her second husband was Tamás Nagy de Borsa. They were married, but the date and place have not been found. They had no known children.
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