s.bernbaum
Mostly lurking
Yeah I'm thinking too that Brian Boru is the best choice for the renaming of Brennus. He fits the traits I gave to the leader too: Charismatic/Diplomatic. We have Boudica to represent the Britons (who encompass the tribes from the Welsh regions). The Irish/Hibernian Celts were distinctly different even back then.
FWIW, Boudica wasn't from the Welsh area. She was from a small kingdom on the east coast of Britain, somewhat north of where London is today. She led a rebellion against the Romans after the Romans double crossed and killed her husband, the king of that area, who was a loyal supporter of Rome, when they decided that the kingdom should be part of their empire instead of a vassal state.