Sorcha Faal

I have heard very bad rumors about this name being a major source of disinformation. Doing a quick search turned up a lot of commentary alleging as such, this article in particular seemed worth a read, but I need to do a more thorough search to substantiate the claims to any degree. I just know I've seen people mention it, so thought I'd repeat the meme and see if anyone has any knowledge about this, and advise caution and a critical eye.