Borbála was the daughter of Pál Kálnay de Kálnó and Erzsébet Kemény de Gyerőmonostor. The date and place of her birth have not been found.
Her husband was István Thoroczkay de Toroczkószentgyörgy. They were married, but the date and place have not been found. Their two known children were Ilona (<1647-?) and Zsigmond (?-?).