Spanish mystic, born in Avila. She became a Carmelite nun, and in 1562 founded a new and stricter order. She was subject to fainting fits, during which she saw visions. She wrote The Way to Perfection 1583 and an autobiography, Life of the Mother Theresa of Jesus, 1611. In 1622 she was canonized, and in 1970 was made the first female Doctor of the Church.