Hi, Donna - yes, that's me. Been carrying on the research from where my dad left off. Looking at my tree, you must be Kevin's wife - not sure if I ever met him. I don't even recall meeting his mother, but I knew his grandparents (my great aunt & uncle) well from various family get-togethers.
That's useful info - it explains how James could be considered to come from both Scotland and Ireland. I'll send you a private message with my email address and hopefully you can send me copies of some of those documents. I can send you a GEDCOM file with all my Johnston & Thompson stuff.
I wonder if Louisa's death was related to the 'quake - she died only three months after. The headstone doesn't mention it, so probably not, but it would be interesting to see the death record.