Ask Bohemond about a prisoner and ask him about ransom. Also ask him about treasure.
He says he wants treasure. If you bring him treasure, he frees the prisoner and you get xp (51k). No whois that I can tell but he mentions wanting more treasure for prisoners. Maybe a good way to turn treasure items in the game to a lot of XP.
Treasure Items he will take (add to the list):
*Pile of Ornaments from under Klein church altar