Late 17th century portrait showing Highland Dress

[Orvis]

Thanks Peter - that source you provided was most interesting and probably provides the definitive description I have read of John Michael Wright's career with regard to the Lord Mungo Murray portrait. The information about Lord Mungo himself was also interesting, as I'd not found much on him in previous research. The information I found about Wright's career (to include the Lord Mungo Murray portrait) was from Wikipedia and from https://artuk.org/, where a number of Wright portraits of Scottish noblemen (all in conventional European dress), to include Kenneth Mackenzie (3rd Earl Seaforth) and John Graham of Claverhouse (1st Viscount Dundee), are highlighted. I can't find any information that Wright had a Scottish interlude to paint these works, but he had left London because of antipathy toward Catholics (of which he was one) and spent some time in Ireland as a result.

Discussing this topic has been educational AND a lot of fun for me. Thanks for all of the information!