In Cunobelinus's later days Adminius gained control of the Cantiaci in Kent but was driven from Britain in 40 AD, seeking refuge with the Roman emperor Caligula.
[3] Based on coin distribution it appears that Caratacus, following in the footsteps of his uncle Epaticcus, completed the conquest of the Atrebates, the main rival to the Catuvellauni, in the early 40s.
The Roman commander, Aulus Plautius, then dug in at the Thames and sent word for Claudius to join him for the final march on the Catuvellaunian capital, Camulodunum (Colchester).
Tacitus mentions a king who ruled several territories as a loyal ally of Rome into the later part of the first century,[6] called Cogidumnus in most manuscripts but Togidumnus in one.
John Hind argues that Dio was mistaken to write that Togodumnus died after the battle on the Thames: that the Greek word φθαρεντὸς, "perished", may be Dio's mistranslation of a more ambiguous Latin word, amisso, "lost", in one of his hypothetical sources, that in fact Togodumnus was defeated rather than killed, and that the Britons wanted to avenge his defeat rather than his death.