Valentinian III
or Valentinianus III
noun
a.d. 419?–455, emperor of the Western Roman Empire 425–455.
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British Dictionary definitions for valentinian iii
Valentinian III
Valentinianus III
noun
?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
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