Vetranio
Reece Period attributed: Period 18

Member of the House of Constantine dynasty.
Coins for this issuer were issued from 350 until 350.
Vetranio was a commander of the Illyrian army when Constans died and his soldiers were not sure whether to support Magnentius of Constantius II. Constantia, sister of Constantius II, persuaded them to name Vetranio as emperor. Vetranio claimed loyalty to Constantius and stopped Magnentius’ advance until Constantius II could come back from the East. Once Constantius II showed up, Vetranio abdicated power and spent the last six years of his life in peaceful retirement.
View all coins recorded by the scheme attributed to Vetranio.
Wikipedia derived information
Vetranio (d.
circa 360), born in the province of Moesia in a part of the region located in modern Serbia, is sometimes but apparently incorrectly referred to as Vetriano. He was an experienced soldier and officer when he was asked by Constantina, the sister of Roman Emperor Constantius II, to proclaim himself Caesar (March 1, 350). Her brother Constans had been killed by Magnentius earlier that year and she probably thought Vetranio could protect her family and herself against the usurper.
Vetranio accepted and coins were minted in his name, showing the title of Augustus (full emperor), rather than Caesar. Constantius first seemed to accept the new Emperor and sent him money to raise an army, as well as his regalia. Constantius, who was on a campaign against the Persians when Magnentius came to power, returned to the West and met with Vetranio.
Vetranio subsequently abdicated on December 25, 350. He was allowed to live the remainder of his years as a private citizen on a state pension. See Philostorgius 3.22 for his rise to power..
Wikipedia page: http://en.wikipedia.org/wiki/Vetranio
This data is sourced from dbpedia, and as such should be treated with caution

