I found a cemetery listing for George that seems to fit the dates, & he is buried next to a Margaret. But her dates don't match for the mother but more likely a wife or sister.
I'm leaning toward wife as she is listed as widow, so a sister would probably have a married name.
Anyway, I will give you the source & you can play with it to see if anything matches.www.cemeteries.org
just click on genealogy tab and enter a surname. It will give all listings for that name. You can enter a partial surname and it gives all various spellings after last letter
like enter John & you also get Johnson, Johnston etc.
You can click on "find nearby graves" then uncheck the last box (usually the grave number) and it lists any nearby graves. Very nice site if your rellies were Catholic.