Scottish in a variety of plaid tartans.

Reproduced from M. E. Riley, copyright 1997-2003.

This is a detail from a painting, A Highland Wedding at Blair Atholl, by David Allan, ca.1780. We show it with the kind permission of Mara Riley, who shows more details from the same painting in her essay, Before the Clearances: 17th and 18th Century Scottish Highland Costume. (Scroll down about three quarters.)

See the complete picture on Wikipedia.