Third Servile War
Castus was an enslaved Gallic man who, together with the Thracian Spartacus, the fellow Gaul Crixus, and Celt Gannicus, alongside Oenomaus, was one of the leaders of rebellious slaves during the Third Servile War (73-71 BC). He was killed along with his co-commander Gannicus and their Gallic and Germanic followers by Roman forces under Marcus Licinius Crassus at the Battle of Cantenna in Lucania in 71 BC.