Forfarian, and Katie - I have been just reading this thread with great interest, as I have a Heron/Connection - my grandfather was a McAughtrie, from New Cumnock, and one of his sisters, Isabella, married a Heron. I think I have her in a family photo as well, and I'm more than happy to share what I have, possibly a marriage cert as well.
I'll have to go to my private tree on Ancestry in the morning to check on the details for you, but I'll be in touch again as soon as I can, I have a crowd coming for lunch tomorrow, so will probably be later on in the day, so watch this space! I'm up late tonight, so the brain's a bit fuzzy right now.
I'll also look through the many other Thomas McAughtries in my tree in that timeframe, make sure I give you the right one!
If you could PM Me your email address, I will be able to send you an invitation to view the tree if I can find the right entry and certs.
Cheers
Jeanne
Modified to add, sorry, I got the dates wrong, it must be another one of my Thomas McAughtries. I'll have a more thorough check through my certs in the morning. All the McAughtries pretty well stuck to the Scottish naming patterns of naming the first born son after the father, and there are loads of cousins to each other with the names Thomas McAughtrie.