Mausoleum of Duke of Cambridge
George, 2nd Duke of Cambridge and grandson on George III, died 1904. He is buried with his wife, the actress Sarah Fairbrother, otherwise known as 'Mrs FitzGeorge'. The marriage was made without Queen Victoria's permission, in contravention of the Royal Marriages Act. Sarah was mother to 3 of George's children.
The mausoleum is about 60 feet from the grave of Mrs. Louisa Beauclerk, George's mistress: it's on her account that George and Sarah are buried where they are.