Star Wars: The Force Awakens - who is Lor San Tekka?

Just a few minutes into the the film Star Wars: The Force Awakens, actor Max von Sydow's character appears - it's no secret, and no spoiler. His name is Lor San Tekka, and he's a real mystery for one-time viewers of the movie. What we're about to do is discuss what we know about him. We're using information we've attained …