Obi-Wan
Obi-Wan "Ben" Kenobi (57 – 0 BBY) is a fictional character in the Star Wars universe. He was a Jedi Master of legendary status, who played a very large role in the fate of the galaxy. more...
Born in 57 BBY, Kenobi became the apprentice of Qui-Gon Jinn at the age of thirteen. Initially rebellious and headstrong, he grew into a powerful, wise Jedi Master, who went on to lead both Anakin and Luke Skywalker in the ways of the Force.
Kenobi is one of the most prominent characters in the Star Wars saga, along with Anakin Skywalker, R2-D2, and C-3PO; as they are the only major characters to have appearances (in some form or another) in each of the six Star Wars films. He was portrayed in Episodes I-III by Ewan McGregor, and in Episodes IV-VI by Sir Alec Guinness.
Early life
Kenobi was trained as a youngling in the Jedi Temple under Yoda. Without a Jedi teacher at the age of thirteen, however, Kenobi would have been appointed to work in agricultural labor, where he might never have reached his full potential. Eventually he was accepted by Master Qui-Gon Jinn as a padawan learner. These accounts and more may be found in Jude Watson's Star Wars: Jedi Apprentice series.
Little is known of his birth family. According to the series Jedi Apprentice and the novelization of Return of the Jedi, Obi-Wan does remember a brother named Owen (In the events of Attack of the Clones, there is nothing to either suggest or repudiate his relation to Owen Lars, and it is now generally asserted that there is no relation.) It is indicated in the novelization of Revenge of the Sith that he speaks with a Coruscanti accent, although, as he was trained at the Jedi Temple on that planet, that may not be a clue as to his homeworld.
Read more at Wikipedia.org