Name the family seat of the Dukes of Marlborough.
Marlborough House Blenheim (at which the 1st Duke of Marlborough was overall commander for Britain and her allies; seat of the Dukes of Marlborough is Blenheim Palace, one of England's largest houses). A cupola inserted in the ceiling is surrounded by paintings by Orazio Gentileschi for the Queen's House, Greenwich, 1636. There are paired staircases flanking the saloon, with further battle pieces by Laguerre. Most of the interiors have been altered. Marlborough House is usually open to the public for Open House Weekend each September. The house is also open for group tours by prior arrangement. Marlborough House Marlborough House, a Grade
Marlborough House Marlborough House Marlborough House, a Grade I listed mansion in St James's (City of Westminster, Inner London), is the headquarters of the Commonwealth of Nations and the seat of the Commonwealth Secretariat. It was built for Sarah Churchill, Duchess of Marlborough, the favourite and confidante of Queen Anne. For over a century it served as the London residence of the Dukes of Marlborough. The Duchess wanted her new house to be "strong, plain and convenient and good". The architect Christopher Wren and his son of the same name designed a brick building with rusticated stone quoins (cornerstones) that was completed