ILARIO di ROMA. – Deacon, adherent of Lucifero di Cagliari. According to St. Jerome (Altercatia Luciferiani, 27), he published «libellos de haereticis rebaptizandis». He is probably the same person who accompanied Lucifero to Milan in 355. He had died by about 382, when Jerome published his Altercatia Luciferiani et orthodoxi.
BIBL.: Bardenhewer, III, p. 477.