On 19 February 1833, he married Lady Louisa Elizabeth Ryder, daughter of
Dudley Ryder, 1st Earl of Harrowby. They had four sons and four daughters: • Harriet Eleanor Fortescue (1836–1924), married Admiral Sir
Augustus Phillimore • Hugh Granville Fortescue (1838–1875), Captain in the Coldstream Guards • Mary Fortescue (1840–1925), married Rev. Vernon Harcourt Aldham • Elizabeth Frances Fortescue (1843–) • Cyril Dudley Fortescue (1847–1890), Lieutenant-Colonel in the Coldstream Guards • John Bevill Fortescue (1850–1938), barrister,
High Sheriff of Cornwall in 1894 ==Notes==