Tiberinalia
tiberinalia roman festival late antiquity recorded calendar filocalus ad august xvi kal sept day archaic portunalia festival honoring father tiber may reflect renewed imperial patronage traditional roman deity particular dedication made tiberinus emperor diocletian reigned – maximianus august festival deal theme agricultural bounty ensured sun water centering volcanalia volcanus vulcan august portunalia like volcanalia represented large letter extant fasti indicating regarded among ancient holiday calendar bc portunus originally guardian gateway later extension harbor god relation tiber tiberinus god tiber river debatable seen tiberinalia assimilating archaic portunalia theodor mommsen inferred two god scholar rejected identification varro say portunalia mark institution shrine aedes portunus portu tiberino meaning portus unclear ovid mention atrium tiberina hall tiberinus