Hi Liz
Yours is such a complicated family, I couldn't work out by looking through some of your old messages just what you know about your grandfather, Robert Henry Cain, and his parents. It would be helpful if you'd write a message giving us all the absolute definite facts you've got so far (eg from certificates, headstone inscriptions). For the certificates, write down everything that's on them (or scan them and attach them to a message)
If all the hard facts are together in one clear message, it'll be easier for others to help you.
Jean C