I'm not sure if it's worth mentioning, but based on a piece of document found in the Druid library ("Ketheric didn't fall, he was pushed") I think Kethry was originally a Paladin of Selune, and very likely the root of blasphemy among the selunites in the area.
Another thing that might be relevant to mention is the Darkmoon Heresy -- the belief that Selune and Shar are the are the same.
