I think you should only add goryo who are specific and relevant to the series. Focus on them first? We can always expand later, just don't directly copy from websites or books etc.
Are there any that are specifically relevant to the series?
Considering the fact that goryo never physically manifest themselves in apparitional form, but rather appear as natural disaster such as plague, a swarm of insects, ect. The biggest hurdle to overcome is the fact that in no stories of goryo (that I've read) goryo never physically manifest as themselves (which obviously every ghost in fatal frame does), nor are any of them deified to pacify them.
I guess the closest spirits you can consider to be goryo would be Kirie, Sae, Reika and whatever the name of the red kimonoed woman's name is (but technically she can't be one because she's not dead).
I guess I'm going to have to do more research though.
Edited by Kaido, 26 February 2013 - 11:35 AM.