Hardin was the third son of disaffected former Chelaxian nobility. Given the choice of diluting his eldest brother's inheritance, or becoming a sellsword, he carved his own path: He took his training in Diplomacy and the basics of swordsmanship and became a battle-priest of Iomedae.
He's been sent by the church to foment rebellion in Westcrown, to link up with the local resistance if any, or to start same if there is not. His primary goal is to find allies. He will try to disarm someone to talk to them rather than kill them.
In trying to find the local resistance, he eventually found his way to the sewers, where he started following the chalked symbols of Iomedae through the tunnels. Unfortunately, he's about as stealthy as brewery explosion.
Family:
Father: Brandon Clegane. Mother: Brynna.
Uncle Hurnell Clegane, who's sworn to his father, and only recently married.
Brothers: Cedric at 27, Albin at 25, Hardin at 24
Sisters: Tristan at age 20.
Men in the Clegane family have black hair, craggy, reasonably good looking faces, and seldom top 6 feet tall.