Hello Alan
I have just recently come across a Richard Gilbert born c 1842 in Cornwall and married to an Elizabeth. It seems that this family moved to Wales. One of their children was also named Richard and he married a Jane Rosewall.
Now this is all fairly new stuff and I am still sorting it out. In the meantime could you let me know which of your Richard and Elizabeth's children you are descended from and we might be able to combine what we have if they are the same families.
Trish