Jrul, a Jedi Master, existed in the era preceding the Clone Wars. He is known for creating the well-known philosophical conundrum, the Question of Master Jrul. Obi-Wan Kenobi, another Jedi Master, recalled Jrul's Question during his confrontation with the Separatist General Grievous aboard the bridge of the General's command vessel, the Invisible Hand, in the year 19 BBY.
The character of Jrul was referenced in the 2005 publication Star Wars Episode III: Revenge of the Sith, authored by Matthew Stover.