Reminders: First of all Dudely has some wizard blood in him because he's mother was related to Harry Potters mom so she was technically a wizard. Secondly yes Dudely would have taken the wand considering they know Sirius is evil or at least that's what he thinks. And in the fourth book when Lucius Malfoy was torturing muggles he could of gotten a spark of worrisome there! P.s this is a if story don't take to literally