Teresa of Ávila OCD (born Teresa Sánchez de Cepeda Dávila y Ahumada; 28 March 1515 – 4 or 15 October 1582), also called Saint Teresa of Jesus, was a Carmelite nun and prominent Spanish mystic and religious reformer.
Active during the Counter-Reformation, Teresa became the central figure of a movement of spiritual and monastic renewal, reforming the Carmelite Orders of both women and men. The movement was later joined by the younger Carmelite friar and mystic Saint John of the Cross, with whom she established the Discalced Carmelites. A formal papal decree adopting the split from the old order was issued in 1580.
