Arn is the alias of an old friend Olfrid Battle-Born who fought alongside him in the Great War. While visiting Whiterun, he was arrested for drunken behavior. Arn is wanted for murder in Solitude that may end with his execution.
Olfrid doesn't want to see his friend be beheaded, and has asked the Thieves Guild to send someone to forge the prison registry.
- The Elder Scrolls V: Skyrim (Mentioned only)