This double-portrait in miniature of William III and Mary II was given by Queen Mary to George V on 3 June 1916, his fifty-first birthday, and formed part of the collection of objects with Stuart associations which they assembled. Although the double-portrait format is unusual on this scale, it is not unique; posthumous double- portraits of William III and Mary II such as an example in the Mauritshuis, The Hague, have been assigned to Peter Hoadley, who worked in the early eighteenth century. The present miniature appears to be of higher quality than those works and cannot therefore be attributed to the same hand.