Board Thread:Lore Discussion/@comment-13417807-20130726204600/@comment-80.216.217.27-20131213162155

Also;

http://elderscrolls.wikia.com/wiki/Random_Encounters_(Skyrim)

"Looking to join the Stormcloaks. A Redguard Farmer is on his way to sign up with the Stormcloaks in Windhelm."

I see more reason to believe it is a Redguard.