The third Star Wars trilogy has opened up a whole new galaxy of questions for fans to ponder, but one question many were asking upon the 2015 release of The Force Awakens was, "Who is Lor San Tekka?" You'd be forgiven if you don't remember this Max von Sydow Star Wars character, as he was only in The Force Awakens for a couple minutes before getting cut down by Kylo Ren. Even within that brief appearance, however, a myriad of mysteries swelled around him.
There's no shortage of convincing fan theories about the current state of the Star Wars universe, many of which center around Supreme Leader Snoke. The Supreme Leader is also featured heavily in quite a few of these Lor San Tekka fan theories. Beware of spoilers for both The Force Awakens and The Last Jedi.
Redditor /u/uncleubb noted a particular line from Lor San Tekka in The Force Awakens, leading them to the conclusion that San Tekka is an "Alderaanian soldier of fortune":
Lor San Tekka is one of the last Alderaanians. She'll [Leia] always be royalty to me seems pretty obvious. Also, being a member of the church of the force would make sense if your princess is force sensitive.
Redditor /u/Lord Revanous dismisses The Last Jedi's claim that Rey's parents are nobodies. They believe Luke is her father, and he left Rey on Jakku under San Tekka's care:
...what are the odds that Lor San Tekka, an all knowing adviser, is on the planet of Jakku, a nothing planet, but there is one thing (apart from the map) and that's Rey! Now my thinking is [J. J. Abrams] put him there for a specific reason! I still believe that shuttle we see flying away was meant to be Luke, and Luke's most trusted adviser [was] left to watch over his daughter/last survivor, and [Luke entrusted] him with a map to find him come time!
Redditor /u/ColtonCM believes Leia sought out Lor San Tekka specifically, as he is a noted explorer in the books. As such, the theory proposes San Tekka discovered the map on his own:
We know from interviews that R2-D2 downloaded [most of the map] from the Death Star. Why was it incomplete? Either the Empire deleted those records, or they themselves didn't even know about them. In Lor's travels during the reign of the Empire, he uncovered the locations of those other Jedi temples, including the first one.
A theory found on The Cantina forum boards, originally proposed by a user named Amalgam, relies on the assumption that Rey is Luke Skywalker's daughter, which was seemingly ruled out in The Last Jedi. Despite this, their claim that Lor San Tekka is Rey's grandfather is thought-provoking.
They claim San Tekka's daughter, a member of the Church of the Force, had a child with Luke. Much like Luke was left on Tatooine as a child, Rey was left on Jakku under the watchful eye of her grandfather, Lor San Tekka.
The theory goes on to claim that the Church of the Force eventually helped Luke form the new Jedi Academy, which might explain how San Tekka knows Kylo Ren.