In AD 48 the emperor Claudius admitted to the Senate several Gallic notables, who, he noted in a speech, through ‘customs, culture, and the ties of marriage have blended with ourselves’. Snobbish senators protested introducing these former enemies into the heart of the Roman political system. Claudius reminded them of an inconvenient truth. Most of their own senatorial families descended from Italian tribes who once fought against Rome, and were later granted Roman citizenship.

