Kerry
I checked deaths for Maria Martin and, following up on your Dundee connection, found that Marie Martin, daughter of Duncan Martin and Marie Crerar died 12 June 1882 in Dundee. She was the widow of William Cant. Age at death given as 55 years i.e. born 1817 which doesn't agree with the OPR I quoted in last post. Vanity?
By the way, Duncan was a gamekeeper and children born in various locations in East Lothian (?), Fife, Perthshire.
Dod