Benedictine abbess and miracle worker. She was the daughter of Count Berthold of Andechs, in modem Bavaria, Germany. The count and his wife, Sophia, founded a monastery on their esÂtate at Diessen, Bavaria, and placed Mechtildis there at the age of five. She became a Benedictine nun, and then abbess. In 1153 the bishop of Augsburg placed her in charge of Edelstetten Abbey. Mechtildis was revered for her mystical gifts and miracles. She died at Diessen on May 31.