Adminius, Amminius or Amminus was a son of Cunobelinus, ruler of the Catuvellauni, a tribe of Iron Age Britain.
[3] Cunobelinus had maintained friendly relations with the Roman Empire, and it has been speculated that the elderly king had lost control to an anti-Roman faction led by his other sons, Togodumnus and Caratacus, who may have been instrumental in forcing Adminius out of power.
The emperor at the time, Caligula, presented this relatively minor event as a great victory over the foreign tribes of Britain and even penned an extravagant report which he insisted be read to the Roman senate.
[4] In any case, Rome's refusal to return the fugitive Adminius to his father was one of the contributory factors to growing anti-Roman sentiment in Britain, which necessitated Claudius' successful invasion of that land in 43.
Miles Russell of Bournemouth University argues that Sallustius Lucullus, Roman governor of Britain in the late 1st century (and who is also cited from an inscription found in Chichester), was therefore a son of this prince.