Erthor is a bosmer sorcerer and member of the Mages Guild in Skingrad. Because of a freak scamp incident the head of the guild hall Adrienne Berene told him to practice magic at Bleak Flats Cave.
He’d check in with the guild every two weeks but after the cave became overrun with zombies he was unable to leave. Unfortunately for him after missing the two week check in Adrienne had completely forgotten about him. Only after being told of his absence dose she suddenly recall sending him to the cave and sends the player to retrieve him.
"Adrienne, I'm back! I was rescued!"
"So it would seem. You are unharmed, I presume?"
"Well, my pride is a little wounded..."
"Oh, spare me. You're lucky I bothered to send someone after you at all. In the future, would you please be more careful?"
"Erm, well... yes. I'll just pack up my supplies and be on my way, then. Thank you for sending someone to help me."