Question: Which battle taking place in 7th century England was the result of peace overtures from Augustine's English mission by the Synod of Chester where the armies of the combined Welsh kingdoms of Powys and Rhôs were virtually annihilated?
Sentence (from "Battle of Ruxu (222–223)"): The Battle of Ruxu, also known as the Battle of Ruxukou, took place in 222-223 between the forces of Cao Wei and Eastern Wu during the Three Kingdoms period.
Relevant evidence: No