Cadwallon

Cadwallon is a Welsh name, derived from the Brythonic *Katuwellaunos (Proto-Celtic *Katu-welnā-mnos), meaning "The One Who (-mnos) Leads (welnā-) in Battle (katu-)". The same name belonged to the Catuvellauni (pronounced: KA-tu-well-OW-nee) tribe of modern Hertfordshire, one of the most powerful British tribes in the Late Iron Age who led the resistance against the Romans in 43 CE and possibly against Caesar in 55 and 54 BCE as well.