Malcolm here – I have recently published my full family history here.
Here is a direct link to my grandmother Agnes Dunsire Mercer within the family tree.
This is a link to a website which concentrates on the Dunsire family.
Here is also a lot of information on Mercers from Fife at the Mercer Millions website. This site also has information on the rumour about the missing “Mercer Millions” in Canada.