Apparently it is Greyfriars Kirkyard, although she says all a happy coincidence that some of the names are the same there as in her books.
The most famous person buried there is the dog ... Greyfriars Bobby, do you remember the wee statue of the dog?
Yeah I used to go walking in a few of them with our Alaskan Malamute dogs when we lived in Edinburgh. In winter it scared the shit out of some of the druggies in there seeing two big wolves coming at them in the dark 🤣
Jeeeeesus! just googled your hounds....never mind the druggies, they would scare the shit out of me too!