In Revenge of the Sith, his apprentice, Serra Keto, was Force choked by Darth Vader during his purge of the Jedi Temple. Though he was not a member of the Jedi Council, his dueling abilities rivaled those of the Council members. In the novelization of Star Wars: Episode III: Revenge of the Sith, it is revealed that Yoda trained him in the lighstaber, and he in turn trained Obi-Wan. He was a legendary lightsaber master and instructor.
Cin Drallig was a Jedi Master in the years during and previous to the Clone Wars.