Flavius Placidus "Valentinianus", III, Western Roman Emperor (425-455)
- Born: 2 Jul 419, Ravenna, Italy
- Married: 29 Oct 437, Constantinople, Byzantium
- Died: 16 Mar 454-455, Roma, Italia
He was proclaimed Most Noble (Nobilissimus) by his uncle Honorius before 423. Nobilissimus between 423 and 424. He succeeded John as Emperor of the West in 425. Emperor in Western Roman Empire, between 425 and 16 March 455. He issued, acting in conjunction with Pope Leo I the Great, the famous Novel 17, which assigned to the bishop of Rome supremacy over the provincial churches in 444. He was had the Roman General Ĉtius, who defeated Atilla the Hun at Chalons in 451, killed in 454. He murdered, as a result of false information that made him his doubt loyalty, Aetius, the great patrician, with his own hands in the imperial palace on 21 September 454 in Rome, Italy.
Killed by two of General Ĉtius' supporters.
Flavius married Licinia Eudokia "Theodosia" Western Roman Empress, daughter of Flavius "Theodosius" II, Eastern Roman Emperor (408-450) and Aelia Eudokia, Poet, Roman Empress, on 29 Oct 437 in Constantinople, Byzantium. (Licinia Eudokia "Theodosia" Western Roman Empress was born in 422 in Constantinople and died in 462.)