Erzsébet was the daughter of András Szilvásy de Kecsetszilvás and Márta Járay de Jára. The date and place of her birth have not been found.
Her husband was János Thoroczkay de Toroczkószentgyörgy. They were married, but the date and place have not been found. Their two known children were Ferenc (?-?) and László (?-1603).