Tom Riddle's gang

The ''Knights of Walpurgis]] was the order of wizards and whiches who upheld beleifs in superiority to non-pure-bloods. They used the Dark Arts to acheive their goals and became known as dark wizards, dying out shortly before the rise of the more-modern version of themselves, the Death Eaters under Lord Voldemort. The Knights of Walpurgis probably held membership to the House of Gaunt, House of Slytherin, House of Malfoy and possibly the House of Weasely, despite the non-biast basis of beliefs in the modern Weasely family. The leader of the Knights of Walpurgis was probably the last dark lord before Lord Voldemort, Walpurgis.