I don't have a connection that I know of, but in six years of researching Kerry this is the first time I've heard somebody else researching the name GRANDVILLE or GRANVILLE. This name is in my research only from an account of Camp, County Kerry relatives that a cousing of mine, Elizabeth Griffin Stokes, who now lives in New Zealand, wrote:
"...Also, there was a sister of Grandfather John Griffin living in Sydney. All I know is that her name was Mrs. GRANVILLE and that she had one adopted daughter. I expect that is how Aunt Mary (Mary Griffin - daughter of John Griffin) and my father (Patrick Griffin - all Griffins from Camp) emigrated to Sydney in the first place."
So, I have a Griffin ancestor, who came from Kerry (likely Camp, County Kerry, although I only know their children were from there) that married a Granville (or Grandville).