I don’t know anything about this, but I heard it played after this tune: https://thesession.org/tunes/8626
See the comments for details of the recording that it was on.
"Peggy’s Wedding"
In case you’d like a name for it. It can be found in both the Skye and Athole collections as well as in "Gow’s Complete Repository"…
Correction, I was sure it was in the Skye collection but on an initial search I’m not finding it… 😏 Sorry…