Regulus Black

Regulus Arcturus Black (1961 – 1979) was an English pure-blood wizard, born to Orion and Walburga Black, and the younger brother of Sirius Black. He was a member of the noble House of Black, an old wizarding family, which probably started around the Middle Ages. He attended Hogwarts School of Witchcraft and Wizardry in 1972 and was sorted into the Slytherin house. Regulus became a Death Eater in his youth, but defected when he found what Lord Voldemort would do in order to reach his aims. Regulus also learned about one of Voldemort's Horcruxes and decided to destroy it. He was killed after acquiring Salazar Slytherin's locket in 1979.