Bellatrix Lestrange was born in 1951 .She was a pureblood and a typical Slytherin .After graduation , she married to Rodolphus Lestrange .Then she joined Lord Voldemort with Lestrange brothers .They served for Voldemort in 1970s ,making evil and cruel iniquity .
Bellatrix was crazy about using unforgivable curses ,especially using Crucio when she was torturing somebody .In 1981 when Voldemort failed in capturing Harry Potter ,Mr and Mrs Lestrange were still loyal to their Lord and managed to get clear what had happened .At last ,they got two Aurors – Frank and Alice Longbottom .Death Eaters would rather believe Lord Voldemort was captured than conquered .The Longbottons knew nothing about this ,Bellatrix and her mates tortured them madly .