After Luke Skywalker helped his father to defeat Darth Sidious and return to the light side in Return of the Jedi, he travelled the galaxy to search for ancient Jedi temples and artifacts. During his travels, Luke Skywalker discovered a lot of information about the previous history of the Jedi Order and some of its highest ranking members.
I’m going to break down exactly what Luke Skywalker knew about Ahsoka Tano, the former apprentice of his father, Anakin Skywalker.
Luke Skywalker knew about Ahsoka being framed and exiled from the Jedi Order, and Likely about Barriss Offee’s role in the Clone Wars Season 7.