Francis Charles Seymour-Conway, 3rd Marquess of Hertford, was born 11 March 1777 to Francis Seymour-Conway, 2nd Marquess of Hertford (1743-1822) and Isabella Anne Ingram-Shepheard (1760-1834) and died 1 March 1842 London, England, United Kingdom of unspecified causes. He married Maria Emilia Fagnani (1771-1856) 18 May 1798 in Southampton, Hampshire, England, United Kingdom. Charlemagne (747-814)/s, Henry II of England (1133-1189)/s, Willem van Oranje (1533-1584)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s, Robert I of Scotland (1274-1329)/s.
|Francis Maria Seymour-Conway (1799-1822)|
|Richard Seymour-Conway, 4th Marquess of Hertford (1800-1870)||22 February 1800 London, England, United Kingdom||25 August 1870 Paris, France||Elizabeth Agnes Dunlop-Wallace (1789-1864)|
|Henry Seymour-Conway (1805-1859)|