Rufius Petronius Nicomachus Cethegus
Rufius Petronius Nicomachus Cethegus was a politician of Ostrogothic Italy and the Eastern Roman Empire. He was appointed consul for 504, and held the post without a colleague. His father was Petronius Probinus, the consul for 489 and prominent supporter of Antipope Laurentius.
John Moorhead has proposed identifying Cethegus with a Petronius of Rome, who with a Renatus of Ravenna debated Severus of Antioch on the nature of Christ while Severus resided in Constantinople (508–511). If correct, this identification would put Cethegus in a circle of aristocratic intellectuals around Boethius.
In December 546, when the King of the Ostrogoths Totila overcame the Byzantine defences and entered the city of Rome, Cethegus, who by his seniority had become president of the Senate, ex-consul Decius, and Anicius Faustus Albinus Basilius fled Rome with general Bessas. According to the Liber Pontificalis, Cethegus and Basilius reached Constantinople where the Emperor Justinian I consoled them "and enriched them as befitted Roman consuls."
While residing in Constantinople, Justinian twice used Cethegus' services to negotiate with Pope Vigilius over the latter's refusal to condemn the Three Chapters: the first was in late 551, when Vigilius had fled the Placidia Palace and sought sanctuary in the basilica of Basilica of St. Peter of Hormisdas; the second in Spring 552, when Vigilius had again fled the Placida Palace shortly before Christmas, and this time finding sanctuary in the Church of St. Euphemia in Chalcedon.
He was still alive in 558.
- Jeffrey Richards, The Popes and the Papacy in the Early Middle Ages (London:Routledge and Kegan Paul, 1979), p. 79
- Moorhead, "The Last Years of Theoderic", Historia: Zeitschrift für Alte Geschichte, 32 (1983), p. 108
- Raymond Davis, translator, The Book of Pontiffs (Liber Pontificalis) (Liverpool: University Press, 1989), p. 58. Procopius, De Bellus VII.20.18; translated by H.B. Dewing, Procopius (Cambridge: Loeb Classical Library, 1979), vol. 4 p. 329
- Davis, The Book of Pontiffs, p. 58
- Richards, The Popes and the Papacy, pp. 150f
- Bagnall, Roger S.; Cameron, Alan; Schwartz, Seth R.; Worp, Klaas A. (1987). Consuls of the later Roman Empire. Philological Monographs #36. American Philological Association. p. 543. ISBN 1-55540-099-X., citing Prosopography of the Later Roman Empire, Vol II, PP 281-2
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