Born on the planet Stewjon, Kenobi became the Padawan learner of Jedi Master Qui-Gon Jinn. Kenobi then became the first Jedi in a millennium to defeat a Sith Lord when he defeated Darth Maul during the Battle of Naboo.
Did Obi-Wan use the dark side to defeat Darth Maul?
Obi-Wan Kenobi tapped into the dark side to defeat Darth Maul, Anakin Skywalker, General Grievous, and Pre Vizsla in various battles. His struggle with the dark side is often overlooked compared to Anakin's, but Obi-Wan's emotions occasionally led him to dark actions.
But what is important is that Maul survived, and he did so because of his hate specifically for Kenobi. Just as Zuko's firebending was fueled by his drive to catch the Avatar, Maul's survival is made possible because of his specific drive for revenge against Kenobi.
When he dies in Rebels you see Obi-wan holding the dying body of Maul. This is supposed to represent that he's gone beyond hatred or anger towards Maul, and instead feel pity that it had to end this way.
The real reason for Obi-Wan's victory, though, may have been that he was the better fighter. While Darth Maul's moves were flashy, Obi-Wan eventually proved himself as one of the best duelists in the galaxy, and his fight with Maul was just the awakening of his skills.
Although Obi-Wan was caught off guard by a Force push from Maul, he was clearly more than a match for the Sith apprentice. In fact, Maul trying to throw Obi-Wan into Naboo's melting pit shows he himself wasn't confident in his ability to best Kenobi with a lightsaber.
He had killed his master, Qui-Gon Jinn, for which Obi-Wan got his revenge by slicing the Sith in half. But after Maul took yet another person away from him, Obi-Wan absolutely hated Maul. The Jedi Master almost let his rage and anger get the best of him, growing close to the dark side before he rejected it.
In the film's climax, Maul duels Qui-Gon and his apprentice Obi-Wan Kenobi (Ewan McGregor). He is able to kill Qui-Gon and knock Obi-Wan down a shaft, but Kenobi propels himself out of the pit and uses Qui-Gon's lightsaber to bisect Maul, sending the two parts of his body falling down the shaft.
He can feel Obi-Wan Kenobi's presence in his mind's eye, but searching an entire planet for a man who doesn't want to be found has proven to be far more difficult than Maul expected. In exasperation and rage, Maul cries out Kenobi's name.
In an instant, Kenobi sliced the blade through Maul's waist, cutting him in half and sending him falling down the shaft, an act that would drive him to insanity and hatred towards Kenobi.
The fight was orchestrated by a darksider cult called the Prophets of the Dark Side, who wanted Vader killed and replaced with Maul as Darth Sidious' only true apprentice, because they felt the former was "tainted" by his Jedi past and not worthy of being a Sith.
Regardless, based on the season 7 of The Clone Wars, and the fact that Darth Maul was aware of Anakin Skywalker's future and his role as the Chosen One, it is very likely that Darth Maul indeed feared Darth Vader to some extent, and preferred to avoid a direct confrontation with him, at least, on his own.
As the son of Mother Talzin, the Zabrak male was taken from a young age by Sidious to act as his impressionable apprentice. The boy was raised as Darth Maul, a name he carried throughout his life. In Legends, it was insinuated that he was born "Maul" before attaining the honor of the "Darth" title.
After a period of tension, Maul strikes first but is quickly countered and defeated by Kenobi. Before Maul dies, Kenobi stays by his side and reveals to him that he is watching over whom he believes is the Chosen One, with Maul's last words being, "He will avenge us". Ezra and Chopper return to base on Maul's ship.
He has an intense rivalry with evil Obi-Wan Kenobi as Obi-Wan started the rivalry when Grievous first met the infamous General Kenobi on the Malevolence. Grievous constantly wants to kill Kenobi face-to-face any chance he gets as he will even have traps set up for other Jedi just to face the sinister Kenobi himself.
Maul most likely knew Sidious' double role as Palpatine and Sidious when he served as Palpatine's apprentice. He definitely knew about Palpatine's goal of creating a galactic empire ruled by the Sith. Maul knows that Sidious is the Emperor.
During the battle, Anakin, who had been known as the Sith Lord Darth Vader, was redeemed by Luke and brought balance to the Force. However, the redemption cost Anakin his life, having been mortally wounded by the Emperor, Darth Sidious, while killing his former Master. After his death, Anakin became one with the Force.
Anakin Skywalker ultimately ended up hating Obi-Wan Kenobi for many misguided reasons, but Darth Vader's subconscious response to the Jedi's final declaration of love in the Star Wars prequels shows the real reason he could never forgive him.
The realistic answer seems to be, yes, Anakin in his prime could have defeated Luke Skywalker (in the current canon) if they battled one-on-one. The main reason behind this is Luke's lack of formal Jedi training, at least when it comes to combat.
As far as I know, there is no Canon date of birth for Maul, but in Legends, he was born in 54 BBY. In canon, Maul was killed by Obi-Wan Kenobi on Tatooine during the year 2 BBY. If we use the Legends year of birth, then Maul would have been 52 years old when he died.
