Have you tried the Public Archives of Nova Scotia? There is a Tanner in my family tree that I found on "Pictou County Surname Registry", under Mike Mennen's homepage. A Martha Tanner was married to a David Porter. They had 9 kids. She was born 1848 and died 1928. I would also Google "Pictou County Cemeteries" to find the name too. It's time consuming, but you might just find some answers.