Bellatrix Lestrange (née Black) (1951-2 May, 1998) also known as Bella, was a pure-blood witch, the daughter of Cygnus and Druella Black and elder sister to Andromeda and Narcissa. She attended Hogwarts School of Witchcraft and Wizardry in 1962 and was sorted into Slytherin house. After graduating from Hogwarts, she became a Death Eater who was fanatically loyal to Lord Voldemort. She was one of the few known females in the group, as well as among the most dangerous and sadistic of Voldemort's followers. While Bellatrix and Narcissa married pure-blood wizards, Andromeda married Ted Tonks and was disowned from the family. At the end of the First Wizarding War, Bellatrix, her husband, Rodolphus Lestrange, his brother Rabastan, and Barty Crouch Jr. tortured Aurors Alice and Frank Longbottom to the point of insanity searching for information on Lord Voldemort after his first downfall.
Bellatrix was sentenced to life imprisonment in Azkaban for torturing the two Aurors Frank and Alice Longbottom, but escaped in the 1996 mass break-out, along with nine other Death Eaters. She participated in several battles of the Second Wizarding War, making it a particular goal to kill any relatives who were members of the Order of the Phoenix, including her cousin Sirius Black and niece Nymphadora Tonks. She also killed the Malfoy family's former house-elf, Dobby, who had become a firm ally of Harry Potter. She was also one of the last Death Eaters standing during the final battle, and was eventually killed by Molly Weasley during her final ferocious and vicious duel with her in the Great Hall at Hogwarts.