Thread:Unrulyruby100/@comment-6301921-20130930024039/@comment-27202257-20130930034010

I did a bit of digging, and there is one place where they call it that: Game Informer.

"The Litany on the White Cliff occurred here, and was one of the important moments in history, during which the world’s foremost religion came into being."

Still, I think calling it the siege works fine, because that's in-game content. I'll add something to the book page for clarification and change the name.