Marcus Calventius Viator was a soldier and commander of Roman Emperor

Hadrian Hadrian ( ; ; 24 January 76 – 10 July 138) was Roman emperor from 117 to 138. Hadrian was born in Italica, close to modern Seville in Spain, an Italic peoples, Italic settlement in Hispania Baetica; his branch of the Aelia gens, Aelia '' ...

's horse guards, the ''equites singulares Augusti'', during the early 2nd century. Viator served as a

centurion In the Roman army during classical antiquity, a centurion (; , . ; , or ), was a commander, nominally of a century (), a military unit originally consisting of 100 legionaries. The size of the century changed over time; from the 1st century BC ...

Legio IV Flavia Felix Legio IV Flavia Felix ("Lucky Flavian Fourth Legion"), was a Roman legion, legion of the Imperial Roman army founded in AD 70 by the emperor Vespasian (r. 69–79) from the Cadre (military), cadre of the disbanded Legio IV Macedonica, Legio IV ' ...

and was training officer (''exercitator'') of

Gaius Avidius Nigrinus Gaius Avidius Nigrinus (died 118 AD) was a Roman senator who lived between the 1st and 2nd centuries. Nigrinus served as suffect consul for the '' nundinium'' of April to June 110 with Tiberius Julius Aquila Polemaeanus as his colleague. Ances ...

' horse guards (''equites singulares''). He made a dedication at the legionary base in northern

Dacia Dacia (, ; ) was the land inhabited by the Dacians, its core in Transylvania, stretching to the Danube in the south, the Black Sea in the east, and the Tisza in the west. The Carpathian Mountains were located in the middle of Dacia. It thus ro ...

at Apulum sometime between 110 and 118. In 118 Nigrinus was involved in a conspiracy with

Lusius Quietus Lusius Quietus (, ; , ) was a Roman Berber general and 11th legate of Judaea from 117. He was the principal commander against the Jewish rebellion known as the Kitos War (''Kitos'' is a later corruption of ''Quietus''). He was notably one of t ...

against Hadrian. It has been speculated that Viator may have implicated Nigrinus, given his later promotion under Hadrian.Birley, p. 89 Viator was promoted to the emperor's horse guards sometime before 128, being attested at Zarai in Africa Province.

Notes

{{Reflist 2nd-century Romans Ancient Romans from unknown gentes