Britomaris was a war chief of the Senone tribe of the Gauls of northern Italy. He is briefly mentioned in a text by Appian, who said that he killed some Roman ambassadors who were sent to remonstrate about him providing mercenaries for forces which fought the Romans despite having signed a treaty with Rome.
Britomaris, a chief of the Senone tribe from Gaul, was mentioned in a text by Appian. He is described as having killed Roman ambassadors who were sent to address his actions of providing mercenaries for opposing Roman forces despite signing a treaty with Rome.