Othmar was an 8th-century Benedictine monk and priest of Alemannic descent who served as the inaugural abbot of the Abbey of St. Gall. After studying at the cathedral school in Chur, he was appointed to oversee the cell of St. Gall, where he organized the monastic community. He later implemented the Benedictine Rule at the monastery, establishing a foundation for future educational and social services. His life ended in captivity on the island of Werd following a dispute over monastic property.