Maria Seymour-Conway, Marchioness of Hertford London society hostess (1771-1856) (1771–1856) Parents Costanza Brusati George Augustus Selwyn William Douglas, 4th Duke of Queensberry Children Henry Seymour Lady Francis Maria Seymour-Conway Richard Seymour-Conway, 4th Marquess of Hertford Siblings Antonietta Fagnani Arese Partners Francis Seymour-Conway, 3rd Marquess of Hertford
