Blenheim Palace Blenheim Palace Blenheim Palace (pronounced ) is a monumental country house in Blenheim, Oxfordshire, England. It is the principal residence of the Dukes of Marlborough, and the only non-royal, non-episcopal country house in England to hold the title of palace. The palace, one of England's largest houses, was built between 1705 and 1722, and designated a UNESCO World Heritage Site in 1987. The palace is named for the 1704 Battle of Blenheim, and thus ultimately after Blindheim (also known as Blenheim) in Bavaria. It was originally intended to be a reward to John Churchill, 1st Duke of Marlborough for his
Blenheim Palace was Marlborough's second daughter Anne. The 1st Duke as a soldier was not a rich man, and what fortune he possessed was mostly used for finishing the palace. In comparison with other British ducal families the Marlboroughs were not very wealthy. Yet they existed quite comfortably until the time of the 5th Duke of Marlborough (1766–1840), a spendthrift who considerably depleted the family's remaining fortune. He was eventually forced to sell other family estates, but Blenheim was safe from him as it was entailed. This did not prevent him selling the Marlboroughs' Boccaccio for a mere £875, and his own