Frederica, Duchess of York, was the only daughter of Crown Prince Frederick William of Prussia, later King Frederick William II and his wife Elizabeth Christine of Brunswick-Lüneburg. On 29 September 1791 she married, at Charlottenburg Castle, Prince Frederick, Duke of York and Albany, second son of King George III and Queen Charlotte. A second wedding took place at Buckingham Palace on 23 November of the same year.
A similar enamel by Hone to the present lot, signed and dated 1792, is in the British Royal Collection (see R. Walker, The Eighteenth and Early Nineteenth Century Miniatures in the Collection of Her Majesty The Queen, Cambridge, 1992, p. 115, no. 228) and it is thought to have been painted for the Prince of Wales.