The Dread Pirate Westley

I noticed what I think is an allusion to The Princess Bride in one of the early Cersei chapters in A Feast for Crows. First, the undergaoler in charge of the black cells' name is Rugen, like Count Rugen (the Six-Fingered Man). Then, soon after introducing Rugen, another character concludes what a certain poison was and that he would "stake his life on it." Very similar to "Iocaine powder. I would stake my life on it," said by Prince Humperdink. Anyway, I thought it was kind of interesting.