surnamed Bonose, 15th archbishop of Mentz. He was abbot of Fulda, and, at the death of archbishop William of Saxony, March 2, 968, was appointed his successor by Emperor Otho I. Hatto died in 969. The Magdeburg Centuries state that he was eaten alive by rats as a punishment for his avarice, and because he had, during a famine, compared the poor to these animals; and he is the subject of the well-known legend of the Rat Tower on the Rhine. — See Gallia Christiana, 5, col. 456; Hoefer, Nouv. Biog. Gé neralé, 23, 541. (J. N. P.)