Editing Brittany (section)

====Riothamus====
The late 5th century Brittonic leader [[Riothamus]] received correspondence from the eminent Roman jurist [[Sidonius Apollinaris]] and was called "King of the Britons" by [[Jordanes]].  Some suggest that he was a Breton, though others believe that he was from Britain, pointing to the passage that he arrived in the land of the Biturges "by way of Ocean", which would hardly have been efficient or required for a Breton.  Both historians describe Riothamus's losing battle against King [[Euric]] of the Visigoths at [[Déols]] around the year 470.

In response to a plea from the Roman Emperor [[Anthemius]], Riothamus had led twelve thousand men to establish a military presence in [[Bourges]] in central Gaul, but was betrayed by [[Arvandus]], the Praetorian Prefect of Gaul, and subsequently ambushed by Euric's army.{{efn|The Visigoths' version of events was that they had saved the Roman empire from a British invasion.}} After a long battle, the Armorican survivors escaped to [[Avallon]] in [[Burgundy]], after which they are lost to history.  According to Breton king-lists, Riotham survived and reigned as Prince of [[Domnonia]] until his death sometime between 500 and 520, though this may have been a different person.