Frederick William II, King of Prussia (1744-1797), facing right in blue coat with silver-embroidered red facings, white waistcoat and frilled cravat, black stock, wearing the orange sash and breast star of the Royal Prussian Order of the Black Eagle

Frederick William II, son of Prince Augustus William of Prussia and Louisa of Brunswick-Wolfenbüttel married his first cousin, Elizabeth Christine Ulrika of Brunswick-Wolfenbüttel in 1765 and had a daughter, the later Duchess of York and Albany. After his divorce in 1769, he was re-married to Frederika Louise of Hesse-Darmstadt and had five children including King Frederick William III. His reign is characterised by a scandalous moral decay at court due to favoritism and the filthiness of numberless mistresses including the notorious trumpeter's daughter 'Rieke' Enke, styled 'Countess von Lichtenau'. She and two merry bigamous morganatic wives, the newly-styled 'Countess von Ingenheim' (in 1787) and the newly-created 'Countess of Brandenburg' (in 1790) made him the happy father of a further nine recognized children. His private occupations prevented him from maintaining his uncle's high standard of the Prussian Army, which finally led to the bitter defeat of Prussia by Napoleon's troops in 1807.