Ancient Order of the Whills (LadyVader)

The Ancient Order of the Whills was a higher order of beings deeply connected with the Force. They had holy men known as Shamans.
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One of their Shamans was known to have discovered the secret of eternal consciousness and later, Qui-Gon Jinn (LadyVader) learned the secret, allowing him to interact with the living after his death.
The Whills kept a collection of stories, called the Journal of the Whills (LadyVader), that chronicled the history of the galaxy. A Keeper of the Whills was responsible for adding new information into it.
source: starwars.fandom.com/wiki/Ancient_Order_of_the_Whills