In the Myth manual there are mentioned a war called the 20 years war. And it is a war fought around Covenant.
it is fought before Balor arrives.
And i wonder who fought agains eachother
1. maybe it where Cath Bruig that owned the city. And the province liberated it.
2.Maybe the province owned it and Cath bruig attacked.
3. Maybe there have benn a civil war.
i like theori number 2.
Maybe the Cath Bruig empire owned the province once, many years ago. This is very likely. Just hear the name of the land. The province. it sound like it was a province in the mighty cath bruig empire.
if you have played myth you can also sence that there is a not a conflict, but the north and the sout dosn't like each other. Maybe the north was independent while the sout was occupied of Cath Bruig