Francis Seymour-Conway, 1st Marquess of Hertford, KG, PC, PC (Ire) of Ragley Hall, Arrow, in Warwickshire, was a British courtier and politician who, briefly, was Viceroy of Ireland where he had substantial estates.

Field Marshal Henry Seymour Conway was a British general and statesman. A brother of the 1st Marquess of Hertford, and cousin of Horace Walpole, he began his military career in the War of the Austrian Succession. He held various political offices including Chief Secretary for Ireland, Secretary of State for the Southern Department, Leader of the House of Commons and Secretary of State for the Northern Department. He eventually rose to the position of Commander-in-Chief of the Forces.