Yellow ancient hints
I notice there has been some talk about hints in the game referring to the 5th and "yellow" ancient. Well I thought I'd add a hint I think refers to him or it or whatever the heck it is.
In the Old Tower where the evil Bishop is, there is always a shrine with candles that has a creepy wind sound when viewed and says it is honouring an unholy god. There are two eye-like symbols associated with a sun. I believe this could be referring to this ancient.
There are a lot of symbols in the game involing eyes and a sun. I believe that the yellow ancient is associated with the sun or something like that.