Check to see if this is what you are looking for. From this site
http://www.islandnet.com/ocfa/you can search many Ontario gravesites.
In Elmwood, Perth (Burial Records), Drummond Township, Lanark County is the following
Lessard, Georgina A. (McGill) (w/o Norman S.)
Lessard, Norman S. (h/o Georgina A. McGill)
Reference KG-273-1
The reference number gives you the organization to contact to find out details of the inscription on the headstone.
From 2006 posts on Rootsweb you found out that her birth was registered under Annie Mildred which would account for the initial A. on this headstone. I have a relative, Elizabeth Eva, who consistently used her second name on all marriage, birth and death registrations you can track and yet her headstone is Annie Eva. It's always best to make sure you give all possible names as you don't know if they started using a different variation of their name later in life.
Debbie