Urootor Onone

Urootor Onone was an ancient Jedi Master that lived and died sometime before the Hutt War in 12,979 BBY. At some point in his life, he created a holocron that compiled all of his studies on the dangers of the dark side of the Force. It was stolen from the Jedi Temple on Ossus by fallen Jedi Gaven Varss sometime during the Hutt War.