Decentius

Magnus Decentius (died 18 August 353) was caesar of the Western Roman Empire from 350 to 353, under his brother Magnentius.

== History == Nothing is known of Decentius prior to 350. Magnentius usurped power from Constans on 18 January 350, and elevated Decentius as caesar later that year, perhaps in July or August. He was appointed consul in 352. In the following year, after he had lost the battle of Mursa Major, Magnentius' exactions to finance the war drove Gaul into revolt against his dictatorial rule, and Decentius was expelled from the capital, Treves, which headed the revolt.