When was Darth Vader really born?

"A young Jedi named Darth Vader, who was a pupil of mine until he turned to evil, helped hunt down and destroy the Jedi Knights. He betrayed and murdered your father." — Obi-Wan KenobiWhat really caught my ear (even after years of watching this scene) was how Obi-Wan actually refers to Darth Vader as a pupil of his. That changed my perspective on Anakin's turn to the Dark Side, which we really begin to see glimpses of in Attack of the Clones. Especially when he murders the village of Tusken Raiders. I'm not really asking when precisely Darth Vader was "born", but whether or not it was before Sidious gave that name to Anakin. It would seem that from Obi-Wan's perspective, the name itself was only bestowed on a piece of Anakin that existed long before he swore fealty to Darth Sidious. A piece of him that grew so large that it left the rest of him in darkness. And that piece of him began as a Jedi, even when Anakin still was too. via /r/StarWars https://ift.tt/2KNnUu7