Question: how do you become thane of windhelm?
Answer: Eastmarch (Capital: Windhelm) After completing the "Reunification of Skyrim" quest, Brunwulf Free-Winter will become Jarl of Windhelm. The Dragonborn must speak to Brunwulf, and Brunwulf will offer the title of Thane contingent on them helping five people of Windhelm and purchasing Hjerim from Brunwulf's steward.