Vermûnd was the leader of Dûrgrimst Az Sweldn rak Anhûin.
He attempted to assassinate Eragon while he was staying in Tronjheim, though he failed. When Grimstborith Orik told the story how he had found this out to the other clan chiefs, Vermûnd tried to outmaneuver the clanmeet by saying that Eragon was adopted into Dûrgrimst Ingietum, and thus not a guest. However, the other clans pointed out that since Eragon was a Dragon Rider, as well as an official envoy of the Varden to witness the coronation of the new dwarf ruler, and as an elf friend, he was therefore also an honored guest who should be treated as such. Vermûnd was then found to be guilty by the readers-of-law lead by Rimmar.
Once found guilty, he warned the other clan chiefs that any attempt to harm him or his clan, would be met with war. After being chastised by a couple of the other clan chiefs, Orik proposed to have the meet agree to leave Vermûnd completely alone. Orik further motioned to strip Vermûnd of all status and banish him from every knurlan kingdom. The clan chiefs agreed to this, so Vermûnd insulted the clan chiefs, but they merely ignored him, as if he did not exist. Furious, he grabbed at a clan chief, only to be stopped by guards. Vermûnd then stormed out.
Later on, it was revealed that Vermûnd drank and raged about his misfortunes after his banishment, and many of his clan now shunned him even as they themselves were shunned.
Vermûnd's reasons for attempting to murder Eragon were based in his prejudice against all Dragon Riders, due to his clan's near-annihilation during the Dragon War by the Forsworn.