[X] Keep Old Jon aside for later recruitment. Studying his curse could reveal new things about lycanthropy in general, and in the worst case where you hit a brick wall he could infect an enemy later on so that you could break down the template from the roots up in the Flesh Forge. Shield his presence from Fey divination with a Shadowforged Mindblank. --[X] Bring Lord Luthor to Lord Elwood and break down the chain of events, barring the previously mentioned detail. The original silver beast died of his wounds and you have already taken the corpse in for study of their affliction. Whatever Lord Elwood's decision regarding his father is, you have enough leverage at this point over both of them that if you are forced to break the latter's curse, you can press the Lord into making changes suited for your own style of rulership, and if he fails to measure up to them, you can ensure a competent Lord over these lands by taking Lord Elwood in to learn in Sorcerer's Deep, both of magic so he is better equipped to deal with the troubles of these times, but also compassion among others not quite so heartless as both of his parents.
[X] Plan Grabbing Everything Of Value And Cleaning Up Loose Ends -[X] Attempt to recruit Old Jon, offering him a stipend in return for letting the Scholarium study his condition. When the research is finished, he will be relocated elsewhere in the Imperium, to a locale where he will not need to resort to poaching to survive. -[X] Use one or more Miracle spells to scour all remnants of Luthor, Old Jon, and his family from the forest, removing the abandoned home, dried blood, their graves, etc., so that there will be little to no evidence of what really happened. -[X] Lord Luthor will be fed to the Flesh Forge to gain the Wereboar Template and hopefully more knowledge about lycanthropy in general. -[X] Allow Lord Elwood to hold on to his prejudice against magic and his mother to keep her secrets. For now.
[x] Awaken Lord Luthor and clear his mind, tell him that as his king, you have sentenced him to abdicate in favor of his son for incompetence and cruelty