Then Amelia realised that the theory was definitely wrong. Purebloods were not automatically magically stronger than other magicals; nor were Muggle-borns automatically weaker than other magicals. Of the three most powerful wizards in modern-day Wizarding Britain—Dumbledore, Harry Potter, and Voldemort—all three were half-bloods; and Voldemort had been the child of a Squib and a Muggle! On the other hand, Amelia easily could recall Purebloods who were magical weaklings.