[2] In 2009, Grosvenor revealed that the subject of the best-known portrait of Charles Edward Stuart,[3] the 5-foot (1.5-metre) pastel by the French artist Maurice Quentin de La Tour that had been hanging in the Scottish National Portrait Gallery since 1994,[4][5] was of Charles's younger brother Henry Benedict Stuart.

[1] This portrait had until then been widely reproduced and was "immortalised on countless tins of shortbread",[3] as well as appearing in the entry for Charles in the Dictionary of National Biography and numerous book covers, postcards and souvenirs.

[5] This painting was at Gosford House, the home of the Earl of Wemyss, where it had hung in increasing obscurity for 250 years in a gloomy corridor on the ground floor.

[5] The painting was intended to be taken to England and be both reproduced in engravings and used as the "basis for an official royal portrait" if the Jacobites succeeded in restoring the Stuarts to the throne.

It becomes the key source for an awful lot of propaganda to support the Jacobite cause, which were widely distributed, not just in Scotland, but right across Britain and Europe.