Meryl Thomson reports in <<https://my.strathspey.org/dd/issue/3484/|issue 3484>> that:

The earliest known source for Watson's Reel is a silk dance fan from 1797. Other graded dances on the same fan are: Davy's Locker, Galloway House, Leap Year, Wedderburn's Reel (although hard to read).

For more information about this and other dance fans, see the <<https://my.strathspey.org/dd/issue/3484/|original issue>>.