Frederick William II married his first cousin, Elizabeth Christine Ulrika of Brunswick-Wolfenbüttel in 1765 and had a daughter, 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 numerous 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 defeat of Prussia by Napoleon's troops in 1807.