Yoda's old Master

A member of the Jedi Order took on Yoda as a Padawan when Yoda was young, more than eight hundred years before the reign of the Galactic Empire. At some point, Yoda's teacher told their apprentice an insightful story about two Jedi named K'ungfu and Chuang, and taught him how to live in peace. While Yoda eventually became arguably the greatest Jedi Grand Master in history, the information on his Master's identity was lost.

During a mission to the planet Vagadarr Prime around the year 40 BBY, Yoda swore to pass on his Master's teachings and end the war between local human tribes and giants of living stone. When Yoda had become the last Jedi Master in existence, he told his Master's story about K'ungfu and Chuang to Luke Skywalker during the latter's Jedi training on the planet Dagobah in 3 ABY.

Text and facts from the “Yoda's old Master” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.