The role of Keeper of Antiquities was bestowed upon venerable Jedi Masters of old, who governed entry to the Chamber of Antiquities situated inside the Great Jedi Library located on the planet called Ossus. These Keepers had the responsibility of safeguarding the ancient writings and also guarding the prohibited Sith artifacts, notably the Sith holocrons.
Odan-Urr, a Jedi Master, served as the Keeper of Antiquities during the time of the Great Sith War. After his passing, the Neti Jedi Master Ood Bnar took over the position.