FIRMICUS MATERNUS (Julius), a famous writer, who composed in Latin, about the year 345, an excellent book in defence of Christianity, entitled De errore profanarum religionum, which is printed with the notes of John Wouver. There are also attributed to him eight books of astronomy, printed by Aldus Manutius in 1501; but this last work appears to have been written by another Julius Firmicus, who lived at the same time.