Hi Norrie,
Might be a bit of a long shot, looking for an ancestor of mine, James McDonald. He was born around 1784 and died in Buckhaven in 1842, though lived in East Wemyss for a time. His wife Janet (nee Hamilton) died in Buckhaven in 1873. I'm not too hopeful of a stone existing as she was listed as a pauper on her death certificate. The only other thing I have to go on is that his daughter Mary was buried in Methilmill but no stone exists (as you were kind enough to check some time ago).
Ross.