William Cavendish 5th. Duke of Devonshire, KG

William married Lady Georgiana Spencer Duchess of Devonshire, daughter of John Spencer 1st. Earl Spencer and Margaret Georgiana Poyntz, on 7 Jun 1774 in Wimbledon Park, SRY. (Lady Georgiana Spencer Duchess of Devonshire was born on 7 Jun 1757 in Althorp Manor, Brington, NTH, died on 30 Mar 1806 in Devonshire House, Piccadilly, LON and was buried on 9 Apr 1806 in St. Stephen's, Derby, DBY.)