Milestone (milliarium) of the emperor usurper Carausius, dated 286-293 CE. Object was found south of Carlisle (North England); in 1894. The inscription was corrected for the reign of Emperor Constantine I.
The stone reads: Marcus Aurelius Mausaeus Carausius.
Carausius proclaimed himself emperor in Britain after he fled Gaul in 286 CE, before his arrest and execution (he was accused of hoarding loot, taken from pirates), by order of Emperor Maximian.
Carausius ruled until 293 CE, when he was murdered by one of his ministers.
