Hello. I was interested to read about the Cellardyke Dick branch of your family-tree. I'm a native of Cellardyke, I've written a book about the place and I have been researching local families for many years, with the help of some fellow family-history enthusiasts.
I expect you know already that Elizabeth Dick who married Isaac Robertson in 1870 was the daughter of John Dick and Elspeth Wilson. John was the son of John Dick, a native of Lochgelly in west Fife, and Elizabeth Davidson, who came from Inverness. My guess is that the elder John Dick did his military service at Fort George in Inverness-shire and that they met and married up there. Anyway, they ended up in Cellardyke where both John Dicks were linen weavers. The elder John became town officer in later life, dying in 1869 at the age of 77.
The male descendants of these people were mostly fishermen, and there was at least one successful local skipper called Dick in my younger days. There are many descendants, and I know of one who became a professor of engineering at Dundee University.
I mentioned that Elizabeth Dick's mother was Elspeth Wilson. Her father David Wilson had some adventures during the Napoleonic Wars, as you can read in George Gourlay's Fisher Life; or, the Memorials of Cellardyke and the Fife Coast, which contains a huge amount of information about Cellardyke in the old days.
Isaac Robertson was a labourer at Caiplie at the time of his marriage in 1870. Caiplie was a farm down near the sea shore between Cellardyke and Crail, but houses were built there some years ago. The area is famous for its sea caves or "coves", the biggest of which has carved Greek crosses on the walls, thought to be a relic of Christian missionaries to the local tribes back in the Dark Ages. I had ancestors myself who were farm labourers at Caiplie, at an earlier period than Isaac Robertson.
Just a thought - if Isaac was a native of Cumberland, I wonder if his original name might have been Robinson? On his marriage-certificate the name is given as Robertson but he was illiterate, making his X, and wouldn't have known what the clerk was writing. Robinson would be more likely in England than Robertson.
Harry