Katalin was the daughter of Vid Petrichevich but her mother is unknown. The date and place of her birth have not been found.
Her husband was Péter Melith de Brebir. They were married, but the date and place have not been found. Their ten known children were Gyorgy (c1510-c1575), János (?-?), Sára (?-1577), Pál (?-?), Klára (?-?), Ferenc (?-1575), Anna (?-?), Maria (?-?), Dorka (?-1574) and Tamás (?-?).