• Update: Upon speaking to Barthel Gernand:

I met Barthel Gernand on the road southwest of the Imperial City. He and his family wish to build a settlement at Cropsford, but have been unable to do so thanks to maurading goblins. I should talk to Mirisa about how to clear the goblins from the settlement site.

• Update: After talking to Mirisa:

Mirisa says that the goblins at Cropsford are war parties from Cracked Wood Cave, on their way to attack a rival tribe at Timberscar Cave. She's not sure, but usually goblin wars are caused by one tribe stealing the Totem Head from another.

Mirisa suggested two ways to deal with the goblins at Cropsford. One is to recover the Totem Head from the goblins in Timberscar Cave, which would stop the war between the two tribes and leave Cropsford in peace. The other way to keep the goblins away from Cropsford is to kill the shaman of the Cracked Wood Cave tribe, which should effectively destroy the tribe and stop their war parties from attacking Cropsford.

• Update: If you steal the Totem Head:

I have taken the Totem Head from the goblins at Timberscar Cave. I should return to Mirisa and ask her what to do next.

• Update: If you kill the shaman:

I have killed the shaman of the Cracked Wood Cave goblin tribe. I need to let Barthel Gernand know it's safe to begin building the settlement at Cropsford.

• Update: After speaking to Barthel Gernand:

Barthel Gernand thanked me profusely for ending the goblin threat to Cropsford. He promised me a hero's welcome in Cropsford once they have had a chance to establish the settlement.

• Quest complete