British, act. 1876 - 1916 Seymour was a son of Lord Hugh Seymour (himself a son of Francis Seymour-Conway, 1st Marquess of Hertford) and Anna Horatia Waldegrave (a daughter of James Waldegrave, 2nd Earl Waldegrave) and entered the Royal Navy in 1797. He captained HMS Pallas during the Battle of Basque Roads and HMS Leonidas and HMS Fortun??e during the War of 1812. For his part in the latter war, he was appointed a CB in 1815 (alongside many other Captains) and a KCH in 1831 (and later a GCH in 1834). He rose through the ranks in the navy over the years and in 1852 was appointed a KCB (and later a GCB in 1860) and finally as an Admiral of the Fleet in 1866.