Carloman was the brother of king Pepin, and son of Charles Martel. On the death of his father he succeeded to the government of Australia, Thuringia, Bavaria, and the country of the Alemanni; or Germans. In 742 he assembled a council at some place (name unknown) in Germany, founded the celebrated monastery of Fulda, endowed other religious houses, and finally resigned his kingdom, and became a monk in a convent which he had built in honor of St. Silvester, on Mount Soracte, near Rome. Thence he went to Monte Cassino, where he obtained no higher office than that of assistant cool. He was sent into France, by his abbot, on business, and died at Vienne in 755.
He is by some esteemed as a saint (Baillet, Aug. 17). See Landon, Eccles. Dict. s.v.; Hoefer, Nouv. Biog. Géneralé, s.v.