The births of the children (with mother Jane Bain Thomson) on FS, if these are correct, are near Dalkeith, Cockpen, Monifieth, Edinburgh rather than in Galashiels itself.
There appear to be two wedding ceremonies
1 in Dysart on 2/12/1868
2 in Edinburgh on 30/11/1868 (St Cuthberts)
Though this may not be unusual perhaps similar to separate civil and church ceremonies in many countries.....I am not a Scots researcher
What is the location of death of David Nicol Philp?
When and where did his wife die?
What was his last location on the census?