Claim: Porta Latina was built in the fifth century A.D. by Honorius (the son of emperor Theodosius I and his first wife Aelia Flaccilla, and brother of Arcadius, who ruled the eastern half of the empire from 395, when their father died, until his death in 408) and is located in Regio XII Piscina Publica.
Evidence: 5th century A.D. Honorius Regio XII Piscina Publica He was the younger son of emperor Theodosius I and his first wife Aelia Flaccilla, and brother of Arcadius, who ruled the eastern half of the empire from 395, when their father died, until his death in 408.