Erzsébet was the daughter of Balázs Kamuthy de Szentlászló and Erzsébet Szentgyörgyi de Abád. The date and place of her birth have not been found.
Her husband was László Thoroczkay de Toroczkószentgyörgy, who she married on 17 JUL 1603 in Brassóvidék. Their three known children were Mihály (?-1622), Zsuzsanna (?-?) and Katalin (?-?).