Celtic tribes in the British Isles

The [Celtic tribes]? in Britain and Ireland were as follows:

The Dumnonii who occupied what are now Devon, Cornwall and Somerset?.

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The Iceni?, who under Boudicca rebelled against the cruel Roman rule of ancient East Anglia.

The Trinovantes? who were the neighbouring tribe of the Iceni, and who joined in their rebellion.

The Ordovices who waged guerrila warfare from the North Wales hills