William married Georiana Spencer on 6 Jun 1774 in Wimbledon, Surrey, England. Georiana (daughter of Baron Spencer of Althop John (1st Earl Spencer) Spencer and Margaret Georgiana Poyntz) was born on 7 June 1757 in Althorp, Daventry District, Northamptonshire, England; died on 30 March 1806 in Piccadilly, London, England; was buried in Derby, Derby Unitary Authority, Derbyshire, England. [Group Sheet] [Family Chart]