Chronicler, mathematician, and poet, born Althausen, Swabia, 1013; died island of Reichenau, Lake Constance, 1054. Though a helpless cripple from birth he took monastic vows, 1043, and became a brilliant scholar, compiling the first medieval chronicle, a monument of erudition. He wrote several mathematico-astronomical works and was a gifted poet, and has been considered the author of the "Salve Regina" and the "Alma Redemptoris Mater."