Rufus is a distant cousin of Her Royal Highness Camilla, Duchess of Cornwall, because both the Duchess of Cornwall and Rufus are great-great-grand-children of Lord William Keppel, 7th Earl of Albemarle.
The coach was built in 1830 for Prince Adolphus, Duke of Cambridge and his family used it for many years until they sold it to William Keppel, 7th Earl of Albemarle, who converted it into a semi-State landau.
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Among his direct descendants are both wives of Prince Charles (Diana, Princess of Wales and Camilla, Duchess of Cornwall), and author Violet Trefusis, who was a daughter of Alice Keppel (Alice Frederica Keppel, née Edmonstone), royal mistress of Edward VII, and George Keppel, son of the 7th Earl of Albemarle.