A huge giant thank you isn't enough here.You are totally amazing.
I have been on the Irish site and searched for Archibald & Margaret without success.I have also searched for his son John Mcfarlane b1855 (my ggrandfather) with results nil. I went back with your info & instructions and there it was.
This does appear to be the correct family as the given names track up.
Not only did you give me a leg up you gave me instruction on how to work the site.
The time you spent on this project fills me with such warmth.You would help a complete stranger out of kindness.