The leader of the Council of First Knowledge, a council within the Jedi Order, was known as the Caretaker of First Knowledge. This individual was responsible for overseeing the Jedi Archives located within the Jedi Temple on the planet Coruscant. The position ceased to exist in 19 BBY when the Order fell.
The Star Wars canon currently acknowledges this title, as seen in Star Wars Super Graphic: A Visual Guide to a Galaxy Far, Far Away, a reference book penned by Tim Leong and released in 2017. Its origins can be traced back to the Star Wars Legends continuity. There, it initially appeared—though under the name Caretaker of the Temple of First Knowledge—in the thirty-third issue of the Star Wars: Republic comic series. John Ostrander wrote this issue, which Dark Horse Comics published on August 22, 2001. The 2009 roleplaying sourcebook The Clone Wars Campaign Guide, published by Wizards of the Coast for the Saga Edition system, refers to the position as Caretaker of the Tower of First Knowledge. The name Caretaker of First Knowledge first appeared in the 2010 reference work The Jedi Path: A Manual for Students of the Force, authored by Daniel Wallace.