Katerina Petrova, is a fictional character from the hit TV series, The Vampire Diaries. Born June 5, 1473, Katherine is a Petrova doppelganger, descended from Amara and Tatia. She is an ex-vampire and the ex-lover to both the Salvatore brothers, Damon and Stefan. She first appears as Katherine Pierce in recurring flashbacks to 1864, which feature her romantic entanglements with the Salvatore brothers. She managed to turn them both into vampires, but she was concurrently captured by the townspeople of Mystic Falls to be killed in Fells Church where they planned to lock the vampires in before setting it alight. She later appears in present day. Behind her sweet-nature facade, a much more calculating side of Katherine is revealed through flashbacks in which she escaped certain death with the help of George Lockwood in 1864. After 145 years, Katherine returns to Mystic Falls, toying with the Salvatores again but clearly with a hidden agenda. Katherine earns no love after she turns Caroline Forbes into a vampire and uses a werewolf, Mason Lockwood, to retrieve a mysterious moonstone.