Teresa was the daughter of unknown parents. The date and place of her birth have not been found.
Her husband was Fadrique Enríquez de Mendoza, who she married in 1432. The place has not been found. Their nine known children were Alonso (c1432-1485), Pedro I (?-1492), Enrique (?-1504), Francisco (?-1491), María (?-?), Leonor (?-1471), Inés (?-1488), Aldonza (c1450-c1520) and Blanca (?-?).