Mildred was the first abbess of the English monastery of Minster-in-Thanet founded by her mother, Saint Ermenburga. As a nun who mortified herself with frequent fasts, Mildred was characterized by an exceptional humility, gentleness, and serenity of spirit. She was remembered for her compassion to widows, orphans, the poor, and the troubled. Her death came at the end of a prolonged and painful illness. Following the translation of Mildred's body to Canterbury in 1033, her relics became highly revered by the city's pilgrims.
