Notker the Stammerer

Notker the Stammerer (c. 840 – 6 April 912), Notker Balbulus, or simply Notker, was a Benedictine monk at the Abbey of Saint Gall active as a composer, poet and scholar. Described as "a significant figure in the Western Church", Notker made substantial contributions to both the music and literature of his time. He is usually credited with two major works of the Carolingian period: the Liber Hymnorum, which includes an important collection of early musical sequences, and an early biography of Charlemagne, the Gesta Karoli Magni. His other works include a biography of Saint Gall known as the Vita Sancti Galli and a martyrology, among others.