Quote Originally Posted by Rex_Tremende View Post

Judging by the wig, the dress Stuart tartan (?), and the white cockade, I'd guess HRH is portraying Bonnie Prince Charlie in one of those ever popular Tableaux that seemed to be a feature of week-long house parties before the Great War.

You can just see the handle of his dirk (which matches the sgian dubh), and doubtless the sword would have been part of the suite. He is also wearing the cordon of the Order of the Thistle, in case anyone was wondering what the "sash" was.