Hilarius (praefectus urbi)
Hilarius (floruit 408) was a politician of the Western Roman Empire. Hilarius is known to be the praefectus urbi of Rome in 408. He is attested in office on January 15 of that year by a law preserved in the Codex Theodosianus. He has been sometimes identified with a Hilarius Praetorian prefect of Gaul in 396, but this identification is rejected by historians on the fact that the urban prefecture was a lesser office than the praetorian one. Bibliography 
 Arnold Hugh Martin Jones, John Robert Martindale, J. Morris, "Hilarius 2", The Prosopography of the Later Roman Empire, Cambridge University Press, 1971, , p. 563. 5th-century Romans
Urban prefects of Rome