Put him down. King, God, Wife, whatever.... put em down. now in the case of children and many npcs, obviously the tactic is to break them to their knees, kill all of their retainers and ransack their immediate surroundings.... no need for revenge, put down all family and friends of anyone you put down. be persistent, this takes time. eventually you will have amassed more money in fines that there are septims to pay them in all of skyrim. dont worry eventually there wont be any guards left. try to lure all essential npcs to a position they can not recover from. -Pits (cant climb out) -Fireplaces (continuous wound recovery cycle, effectively paralyzed) -leave children wherever they flee to they arent really capable of attacking you... just remember to be back in ten years,.... cause a deal is a deal and everyone involved with anyone you kill has to die.... again be persistent, this takes time.... I've been tracking down dunmer that ive been tracking the lineage of since morrowind on through oblivion. at this point it is an academic excercise, as the odds are staggeringly high i have already killed their mate or a friend or family already so I'm pretty much engaging in multicultural ethnic cleansing... skyrim shall soon belong to the animals.... unless one of them crosses me.