Censorius Datianus ( fl. 337–365) was a politician of the

Roman Empire The Roman Empire ( la, Imperium Romanum ; grc-gre, Βασιλεία τῶν Ῥωμαίων, Basileía tôn Rhōmaíōn) was the post- Republican period of ancient Rome. As a polity, it included large territorial holdings around the Mediter ...

, very influential under the rule of Emperor

Constantius II Constantius II (Latin: ''Flavius Julius Constantius''; grc-gre, Κωνστάντιος; 7 August 317 – 3 November 361) was Roman emperor from 337 to 361. His reign saw constant warfare on the borders against the Sasanian Empire and Germanic ...

(337-361).

Biography

Datianus was the son of a servant in the public baths, and he climbed the social ladder to the position of senator in

Constantinople la, Constantinopolis ota, قسطنطينيه , alternate_name = Byzantion (earlier Greek name), Nova Roma ("New Rome"), Miklagard/Miklagarth (Old Norse), Tsargrad ( Slavic), Qustantiniya ( Arabic), Basileuousa ("Queen of Cities"), Megalopolis ( ...

and '' patricius'' of the Empire. He had some properties in

Antioch Antioch on the Orontes (; grc-gre, Ἀντιόχεια ἡ ἐπὶ Ὀρόντου, ''Antiókheia hē epì Oróntou'', Learned ; also Syrian Antioch) grc-koi, Ἀντιόχεια ἡ ἐπὶ Ὀρόντου; or Ἀντιόχεια ἡ ἐπ� ...

, where he built public baths, some gardens and some villas. He also exchanged letters with

Libanius Libanius ( grc-gre, Λιβάνιος, Libanios; ) was a teacher of rhetoric of the Sophist school in the Eastern Roman Empire. His prolific writings make him one of the best documented teachers of higher education in the ancient world and a criti ...

, from whom he received, between 355 and 365, 20 letters still conserved. After serving under Emperor

Constantine I Constantine I ( , ; la, Flavius Valerius Constantinus, ; ; 27 February 22 May 337), also known as Constantine the Great, was Roman emperor from AD 306 to 337, the first one to Constantine the Great and Christianity, convert to Christiani ...

, he became one of the main counsellors of his son

. As ''

comes ''Comes'' ( ), plural ''comites'' ( ), was a Roman title or office, and the origin Latin form of the medieval and modern title "count". Before becoming a word for various types of title or office, the word originally meant "companion", either i ...

'' in 345, he wrote a letter to bishop

Athanasius Athanasius I of Alexandria, ; cop, ⲡⲓⲁⲅⲓⲟⲥ ⲁⲑⲁⲛⲁⲥⲓⲟⲩ ⲡⲓⲁⲡⲟⲥⲧⲟⲗⲓⲕⲟⲥ or Ⲡⲁⲡⲁ ⲁⲑⲁⲛⲁⲥⲓⲟⲩ ⲁ̅; (c. 296–298 – 2 May 373), also called Athanasius the Great, ...

inviting him to return to his see in

Alexandria Alexandria ( or ; ar, ٱلْإِسْكَنْدَرِيَّةُ ; grc-gre, Αλεξάνδρεια, Alexándria) is the second largest city in Egypt, and the largest city on the Mediterranean coast. Founded in by Alexander the Great, Alexandri ...

, after being deposed by the Arians. In 351 was a member of the tribunal that put bishop

Photinus Photinus (Greek Φωτεινός; died 376), was a Christian bishop of Sirmium in Pannonia Secunda (today the town Sremska Mitrovica in Serbia), best known for denying the incarnation of Christ, thus being considered a heresiarch by the Catholic C ...

on trial at the synod of

Sirmium Sirmium was a city in the Roman province of Pannonia, located on the Sava river, on the site of modern Sremska Mitrovica in the Vojvodina autonomous provice of Serbia. First mentioned in the 4th century BC and originally inhabited by Illyrian ...

. In 354 he allowed Libanius to return to Antioch. In 358 he held the

consul Consul (abbrev. ''cos.''; Latin plural ''consules'') was the title of one of the two chief magistrates of the Roman Republic, and subsequently also an important title under the Roman Empire. The title was used in other European city-states throu ...

ate, and he was still ''patricius'' as of 18 September of that year. After the death of Constantius and the rise to power of Julian (361-363), he lost influence. In 363, now elderly, he was in Antioch when Julian died. Datianus followed the new Emperor Jovian to

Ancyra Ankara ( , ; ), historically known as Ancyra and Angora, is the capital of Turkey. Located in the central part of Anatolia, the city has a population of 5.1 million in its urban center and over 5.7 million in Ankara Province, mak ...

, where he passed the winter. When Jovian died in February 364, Datianus wrote from Galatia to

Nicaea Nicaea, also known as Nicea or Nikaia (; ; grc-gre, Νίκαια, ) was an ancient Greek city in Bithynia, where located in northwestern Anatolia and is primarily known as the site of the First and Second Councils of Nicaea (the first and s ...

, where the imperial court was gathered, to support the election of

Valentinian I Valentinian I ( la, Valentinianus; 32117 November 375), sometimes called Valentinian the Great, was Roman emperor from 364 to 375. Upon becoming emperor, he made his brother Valens his co-emperor, giving him rule of the eastern provinces. Val ...

. That same month (February 364), the population of Antioch burned his house, and the city council was accused of doing nothing to fight the fire. The people of Antioch sent Datianus a letter asking for his pardon, through the intercession of Libanius; when Datianus gave his pardon, the people were so happy that Libanius, who brought the news, increased his prestige. Datianus is recorded as still alive in 365.

Bibliography

* Scott Bradbury, ''Selected Letters of Libanius: From the Age of Constantius and Julian'', Liverpool University Press, 2004, {{ISBN, 0853235090, pp. 80–82. *

Arnold Hugh Martin Jones Arnold Hugh Martin Jones FBA (9 March 1904 – 9 April 1970) (known as A. H. M. Jones or Hugo Jones) was a prominent 20th-century British historian of classical antiquity, particularly of the later Roman Empire. Biography Jones's best-known wor ...

John Robert Martindale John Robert Martindale (born 1935) is a British academic historian, specializing in the later Roman and Byzantine empires. Martindale's major publications are his magnum opus, the three volumes of '' Prosopography of the Later Roman Empire'', b ...

, John Morris, "Datianus 1", ''

The Prosopography of the Later Roman Empire ''Prosopography of the Later Roman Empire'' (abbreviated as ''PLRE'') is a work of Roman prosopography published in a set of three volumes collectively describing many of the people attested to have lived in the Roman Empire from AD 260, the date ...

'', Cambridge University Press, 1971, p. 246. Correspondents of Libanius 4th-century Roman consuls