The concept I have in mind:
Jamorin wasn't born in Haltwhistle, but arrived when his family's farm had burnt down in a raid, he had been lucky enough not to be in the house when it was set aflame, the rest of his family wasn't so lucky. After the fire he was determined to join and do his part in the war.
Jamorin Tigersoul was always quick on his feet, he was nimble, but somewhat spindly for a soldier. He wanted to do his part helping out with the war efforts, but although he could swing a sword he was a bit of a clutz and never got the hang of armour, he really wasn't cut out for frontline work. His commander recognizing his shortcomings, and worrying he might do more harm to his allies than enemies, decided to make him a message runner. Though Jamorin protested that he wanted to fight with everyone, but the commander insisted he needed someone trustworthy and light of foot to assure messages and orders were delivered wherever he needed them to go. He was mainly removed from the battles, occasionally he'd get sent out scouting, but his main job was transferring messages.
I'd like to use the Unchained Monk class unless that would be a problem. Thinking Jam would have extensive training so he could be resourceful and take care of himself with whatever's at hand, or an empty fist when necessary since he doesn't really work well with traditional weapons and armour.