or Valentinianus III
- a.d. 419?–455, emperor of the Western Roman Empire 425–455.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- ?419–455 ad, emperor of the Western Roman Empire (425–455). His government lost Africa to the Vandals. With Pope Leo I he issued (444) an edict giving the bishop of Rome supremacy over the provincial churches