William I of Württemberg
On 24 January 1816, in Saint Petersburg, he married his first cousin, Grand Duchess Catherine Pavlovna of Russia (1788–1819), daughter of Emperor Paul I of Russia (1754–1801) and Princess Sophie Dorothea of Württemberg (1759–1828). The couple had two children:
Maria Luisa of Savoy
Maria Luisa was wed by proxy to Philip V on 12 September 1701 at the age of thirteen and was escorted to Nice, arriving there on 18 September. While in Nice, she was greeted by Pope Clement XI who gave her the Golden Rose on 20 September as a ritualistic gift for the young princess. Within a week, she sailed from Nice for Antibes and was taken to Barcelona. The official wedding took place on 2 November 1701.