The Catuvellauni were a Celtic tribe or state of southeastern Britain before the Roman conquest, attested by inscriptions into the 4th century.
Catuvellauni, Tasciovanus, "Hidden Faces" gold stater. Obv: stylized crescents and wreaths with hidden faces. Rev: Celtic warrior on horse right, carrying carnyx.
Coin of Tasciovanus, king of the Catuvellauni.
The Celtic tribes of Southern Britain showing the Catuvellauni and their neighbours.
Coins of Epaticcus, king of the Catuvellauni.
Roman conquest of Britain
The Roman conquest of Britain was the Roman Empire's conquest of most of the island of Britain, which was inhabited by the Celtic Britons. It began in earnest in AD 43 under Emperor Claudius, and was largely completed in the southern half of Britain by AD 87, when the Stanegate was established. The conquered territory became the Roman province of Britannia. Attempts to conquer northern Britain (Caledonia) in the following centuries were not successful.
Roman conquest of Britain, showing the dominant local tribes/kingdoms conquered in each area
Southern British tribes before the Roman invasion
Campaigns under Aulus Plautius and the British tribes
Roman campaigns from AD 43 to 60