Wimbourne House (also known as Wimborne House or the William Kent House) is a large detached town house at 22 Arlington Street in St. James's, a district of the City of Westminster in central London. Designed in the Palladian style by William Kent, it was built between 1743-1754, being completed after the architect's death. It is a Grade II* listed building. The west front of Wimbourne House overlooks Green Park.
Henry Pelham, Prime Minister between 1743–54, hired William Kent to design the house located at 22 Arlington Street in two phases. The original construction began simultaneously with his elevation as prime minister and continued even after the 1748 death of the architect Kent. When Kent died, the work was completed by Stephen Wright. In the 18th century, Arlington Street was not only fashionable, but was known as the 'ministerial street'. Pelham's neighbours included Robert Walpole at No. 5, Lord Tyrconnel, the Duchess of Norfolk and his enemy Lord Carteret, later Earl Granville. The decoration and construction of the house was completed in early 1754, but Pelham died suddenly on 6 March, 1754
The house was then occupied by Granville Leveson-Gower, 2nd Earl Gower, who would later become Marquess of Stafford. Leveson-Gower resided at 22 Arlington while the house he was having built by architect Sir William Chambers was being completed and he was followed by another Prime Minister Augustus FitzRoy, 3rd Duke of Grafton. In 1774, Henry Pelham-Clinton, Earl of Lincoln took possession of his family's home and began renovations, which continued until his death in 1778.
The first owner of the house known in the 19th century was John Jeffreys Pratt, Marquess Camden. In the year of his death, 1840, Marquess Camden sold the house to Major Henry Somerset, 7th Duke of Beaufort, who had served in the Peninsular War as an aide-de-camp to the Duke of Wellington.
When the Duke of Beaufort bought the house he renamed the house after his title and during his residency it was known as "Beaufort House." He hired architect Owen Jones, who had studied the Alhambra to embellish the interiors and expended enormous sums refurbishing the interior of the house. Beaufort sold the house a year before he died to William Hamilton, 11th Duke of Hamilton.
The Duke of Hamilton purchased the house in 1852 and promptly renamed the structure "Hamilton House". He purchased the house for £60,000 and lavished expenses on the house for approximately a decade, including installing iron firebacks with his coronet and motto. Upon his death, the house passed to his widow who sold it via auction in 1867 to Sir Ivor Bertie Guest, who was engaged to Lady Cornelia Spencer-Churchill, daughter of the 7th Duke of Marlborough. In 1880, the title Baron Wimborne was conveyed to Guest, who renamed the house as had been customary, to coincide with his title.
As with previous owners, Guest undertook numerous renovations. For example, one of his main additions was the ballroom: passing from the entry hall to the winter garden, the ballroom was resplendent in elaborate carved, gilded mouldings. The Ritz had originally inquired about acquiring the house in 1898, only to be rebuffed by Lord Wimbourne who replied that he was thinking of enlarging his garden, asking "how much do you want for the Ritz?". Wimbourne House was greatly expanded in the 18th and 19th centuries, but most of these additions were removed in the 1970s and an effort made to restore the "Kentian character" of the building was made.
In 2000, the architectural firm of Ettwein Bridges Architects were hired to create rooms as function suites for the adjacent Mewès & Davis’s Louis XV style Ritz Hotel. After extensive study to try to preserve the elements and special characters of both of the heritage sites, an area was identified to connect the two buildings which was filled with the inner-working machinery of the hotel. The new function suites, and machinery plant had to be built and equipped while both the hotel and casino were still operating. Much of the machinery was relocated to the roof and the new steel structure had to be inserted around existing structures to keep vibrations from the equipment to a minimum.
An inventory and description taken after Pelham's death served as a guide for the restoration. The grisaille paintings Kent had fashioned for the Great Room ceiling, and others, have been restored and regilded. Some of the later remodeling attempts have been preserved, like Owen Jones’s fish-scale motifs. 100 years after Ritz originally tried to obtain the house, it officially became part of the Ritz Hotel.
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