You mention William Roberts was buried in St Mary's, Conwy, would you like me to have a look to see if he has a headstone, as it happens to be my Parish Church ? In Conwy Library they also have a list of everyone buried at the Churchyard and you can sometimes find a few more bits of information from that. It would help if you give the information that is on the death certificate such as dates and address at time of death.
Hello!
Yes he's buried in St Mary's, Conwy. I've visited his grave stone and been given the plot number by the Vicar!

he couldn't give me much more information though and when the Vicar passed my details onto a community email that had more information, they could only tell me that he lived in Mount Pleasant in Wales before he died! I know he died on the 27th May 1862, at Mount Pleasant Conwy and he was with his Dad - John Roberts. I've been told to go to the conwy library before, for more information but unfortunately i live in cheshire!!

i'm dieing to just find out anymore information though, anything at all! or pictures if thats even possible! thank you so much for the help!