Bill,
Hi, welcome to RootsChat. It would help if you supplied a bit more information, as you are no doubt aware there is a lot of name reuse in the Braemar area,
I can see an Alexander Lamond marrying a Margaret Fraser 26 Dec 1752. Him dying in Edinburgh is possible, but there are a fair few Lamonds in Scotland and this was a turbulent time so many records are missing, or just not filled in.
Have you made use of the SP records, they give more information such as Farm or Farm toun names to help with identification.
Don’t just rely on the index. You give Alexander born in 1724, but as far as I can see this is in fact Donald and has been miss indexed.
Happy Hunting.