After Lorath has been wiped off the map, I tried to make peace with them using the guild master quest. In order to find the quarrelsome lord of Lorath, I had much effort tracking him down by searching each and every castle for another lorathi lord who might tell me his whereabouts, whithout starting a fight. Finally someone was able to tell me the troublemaker was outside some castle. I moved there and found the lord standing outside without troops, but as soon as I came closer he just poof vanished - and not into the castle nor anywhere close. He just disappered.
I restarted and loaded a few times without any difference. Eventually I visited the informer lord again, he then told me a new location, where the same thing happened: I found the lord I was looking for, but as soon as I got close he went missing.
I restarted and loaded a few times without any difference. Eventually I visited the informer lord again, he then told me a new location, where the same thing happened: I found the lord I was looking for, but as soon as I got close he went missing.