Stuart is one of the three Ranger apprentices mentioned in The Kings of Clonmel. Will is assigned to administor an exercise to Stuart, Nick, and Liam that requires them to use strategical skills to sneak into a fortified, fully guarded castle. The three boys, who are in awe of young Will's accomplishments, try to copy the tactics he used in The Siege of Macindaw to successfully break into the castle. This grieves Will to no end because they are not using the tools given to them to complete the mission, but are instead copying him.