Dio tells us that, by this stage, Cunobelinus was dead, and Togodumnus and Caratacus led the initial resistance to the invasion in Kent. They were defeated by Plautius in two crucial battles on the rivers Medway (see Battle of the Medway) and Thames. He also tells us that the Bodunni, a tribe or kingdom who were tributary to the Catuvellauni, switched sides. This may be a misspelling of the Dobunni, who lived in Gloucestershire, and may give an indication of how far Catuvellaunian power extended. Togodumnus died shortly after the battle on the Thames. Plautius halted and sent word for the emperor to join him, and Claudius led the final advance to Camulodunum. The territories of the Catuvellauni became the nucleus of the new Roman province.