Madam Bellatrix Lestrange (née Black) (1951 – 2 May, 1998) was a pure-blood witch, the eldest daughter of Cygnus Black III andDruella Black (née Rosier) and elder sister of Andromeda Tonks andNarcissa Malfoy. She started her education at Hogwarts in 1962 and was Sorted into Slytherin house.
After graduating from Hogwarts she became a Death Eater. She was fanatically loyal to Lord Voldemort and was among the most dangerous and sadistic of Voldemort's followers. While Bellatrix and Narcissa married pure-blood wizards, Andromeda married Ted Tonks, a Muggle-born wizard and was disowned by the family. Andromeda was burned off the Black Family Tree and they were forbidden to talk about her. At the end of the First Wizarding WarBellatrix, Rodolphus Lestrange (husband), Rabastan Lestrange(brother-in-law), and Barty Crouch Jr. took part in the torture ofAurors Frank and Alice Longbottom to the point of driving them insane, while searching for information on Lord Voldemort after his first downfall. They were caught and sentenced to life imprisonment inAzkaban for torturing the two Aurors.
Bellatrix escaped from Azkaban 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 murder any relatives who were members of the Order of the Phoenix, including her cousin Sirius Black III and niece Nymphadora Tonks. Bellatrix also murdered the Malfoy family's former house-elf, Dobby, who had become a firm ally of Harry Potter, with her knife. During the final battle, apart from Voldemort, she was the last Death Eater standing, but was eventually killed in a duel by Molly Weasley after her attempt to attack Molly's daughter, Ginevra Weasley.