Saint Teresa Margaret of the Sacred Heart, O.C.D. (†1770) was an Italian Discalced Carmelite nun who, during her brief life of quiet service in the monastery, came to be revered for her mystical gifts. She was Beatified in 1929 by Pope Pius XI and Canonized in 1934 by Pope Pius XI. Teresa Margaret is one of seven Discalced Carmelite nuns to have been declared saints. The other six are: Saints Teresa of Avila, Teresa Benedicta of the Cross, Teresa of Los Andes, Elizabeth of the Trinity, Thérèse of Lisieux, and Mariam Baouardy. Her Feast is celebrated on September 1.