This quest can be acquired from Vincent, a resident of Merhojed who has fallen ill with symptoms of the plague. It should be noted that the quest can only be acquired during the Pestilence side quest, when it becomes possible to speak with Vincent about his concerns.
Note: This quest requires that Henry has learnt how to read by completing the 'Mightier Than the Sword' quest.
Vincent informs you that his last will and testament leaves everything to his wife Wilma, and if she succumbs to the plague, his cousin Dobesh, a cobbler of Janovitz. He emphasises that under no circumstances should anything be left to his son, Elijah.
Once you accept the quest you will have the directive to bring the will directly to Father Fabian, the parish priest of St Martin's Church in Sasau, or to find and speak with Elijah first. If you choose the latter, you can find him at the Tavern on the Green in the centre of Sasau. He will be sat outside the tavern on a bench, labelled 'Villager'.
If you speak to Elijah before you go to Father Fabian, you can offer to make the will disappear so that he inherits everything. In return you will receive a modest reward. Alternatively you can persuade Elijah to return home and make peace with his father. You can then go to Father Fabian, who can be found in St Martin's Church in the south of Sasau.