Hallo SamMary,
I am sorry but I do not have any photographs of John Neilson or his family, I only wish I did! There must be some "out there" somewhere but I have yet to find one.
We must be related in a distant way, and I wish you well in your search. Do let me know if I can help you in any other way.
The people on Rootschat have been so helpful to me in the past. I am so grateful. Happy researching!
Islay