Here is what the National Archives of Scotland has on their site



David Allan
Highland Wedding at Blair Atholl1780

This was painted after Allan's return from Italy, and was the first of his many Scottish genre subjects. Neil Gow, the celebrated violin player, composer and collector of music, takes his place amongst the musicians; Gow's services were retained by the Duke of Atholl, for a fee of £5 a year. The tartan worn in this picture was done so illegally, for highland dress had been proscribed after the Jacobite rising of 1745 in an Act not repealed until 1782.

http://www.nationalgalleries.org/col...Allan&submit=1