Holocron of Odan-Urr
Odan-Urr was a long-lived Draethos male, who served as a Jedi Master and Jedi librarian during the height of the Galactic Republic. He preferred reading and studying rather than combat, though he was a master of the little known Jedi art of battle meditation.
Odan-Urr found an ancient Sith holocron—the only one known to have existed at the time—which he kept safely at all times.
At some point before his death in 3996 BBY, the Jedi Master Odan-Urr created a holocron that contained his teachings. The holocron was lost sometime in the years that followed, though it was rediscovered by the Jedi Master and archaeologist Yuon Par sometime before 3643 BBY.
Aspects: Ancient Force Knowledge, Dark Secrets