My research is WALKER/FERNIE related but I came across this today that may help your research - note the David KERMATH & Margery MILLAR - maybe this is May? Not much help I know but I thought I'd post it anyway.
On 2 Feb 1866 when David FERNIE was 22, he first married Georgina KERMATH, daughter of David KERMATH & Margery MILLAR, in Fleuchar Craig Dundee. Born in 1840.
They had one child: i. Ann Kermath. Born in 1868 in Dundee. Occupation: yarn winder.
On 24 Jul 1891 when Ann Kermath was 23, she married James WALKER, son of John WALKER & Ann MELDRUM, in 46 watson st Dundee. Born in 1868