976 Death John I Tzimisces, co-emperor of Byzantium (969-76), dies at 51 969 Death Nicephorus II Phocas, Byzantine co-Emperor (963-69), murdered 823 Event Pope Peschalis I crowns Lotharius I, co-emperor of France 563 Death Justinianus, co-emperor of Byzantium (527-563), dies at 82 379 Event Theodosius installed as co-emperor of East Roman Empire 375 Death Valentinianus I, co-emperor of E Roman Empire (336-75), dies at 54
