Dorondor is a Bosmer who can be found in Greenhill. He is the butcher of the town. He has set up shop far away from the other merchants in town. He and his assistant, Hahnissi, can be found on the east side of town behind Bowenas and Halindor's House.
If you speak to him, he'll only say, "Where is Trela? She was supposed to pick up her meats."