Saint Gertrude the Great († ca. 1302) was a German Benedictine nun, mystic, and theologian. One of the most esteemed woman saints of the Christian West, she was a notable early devotee of the Sacred Heart of Jesus. Gertrude showed "tender sympathy towards the souls in purgatory" and urged prayers for them. She is, therefore, invoked for suffering souls in purgatory. Gertrude was never formally canonized, but a liturgical office of prayer, readings, and hymns in her honor was approved by Rome in 1606. The Feast of St. Gertrude was extended to the universal Church by Clement XII and is celebrated on November 16, the date of her death.