Camillia Petrova - The daughter Katerina had in 1490. Katerina was now Katherine and Camillia was now Camille. On January 21, 1507 Camille turned 17. Camille was a witch, strange to say. But she was also something else. Witlean, the most powerful creatures on Earth. That is why even though its over five hundred years later, she still is, and always will be. Witleans can never die, literally. You rip their heart out, they grow a new one. Knock their head off they just come in a new body of themselves. They can teleport wherever they want. Anything you can imagine. But they must of course, have a weakness. And they do. If a vampire tries to compel them even with vervain, they give in easily.
In a remote part of Australia, on the south bay is their second weakness. Veronite is a common plant that grows there. If Witleans come in contact with it, or if they swallow it, they die. Witleans can also bring others back to life, like I said anything you can imagine.
Camille, back in the 1500s she told both of the Mikaelson brothers that she loved them, then up and disappeared the next day. She knew she had to choose one, so she made it easy and left. She had no intention of seeing them again and she thought she never would, so she returned to Mystic Falls. She met Elena and the Salvators, who she missed so much. Katherine had kept her hidden from them though, so they never met her. This was when she had to explain everything to everyone she had ever met.