Thank you for your reply
All I know about William and Anne Hugh, other than what I put in to my original post, is that Anne is buried at Caersalem, I can not find William's grave with hers or anywhere else at Caersalem. His grave might be in the old chapel that people went to before Caersalem was built, I don't know what it was called so I'm not sure if it's the one you mentioned!
I have been to the old one though, it was very overgrown at the time which made it difficult to see all the graves.... so I didn't find it that day. Lovely place ... sad to see it in such a sorry state!
If you do find anything I'd love to hear from you because my great Aunt has searched too and has become stuck, due to her age now she finds it hard to do the work and I live to far to keep looking in that area.
Hope to hear from you soon.