He was succeeded by his eldest son, the seventh Duke, who died childless and was succeeded by his younger brother. In 1881 the eighth Duke assumed by Royal Licence the additional surname of Hope on inheriting the substantial Hope estates through his paternal grandmother. On his death the titles passed to his only son, the ninth Duke. He had two daughters but no sons and was succeeded by his third cousin, the tenth Duke. He was the great-grandson of Lord Charles Pelham-Clinton, second son of the fourth Duke. He died unmarried in December 1988, having held the titles for only a month. On his death the dukedom became extinct while he was succeeded in the earldom by his distant relative, the eighteenth Earl, a descendant in the tenth-generation of the Hon. Sir Henry Fynes-Clinton, third son of the second Earl. Lord Lincoln lived all his life in Australia, and reportedly learned of his succession from a British newspaper. He wrote a book: "Memoirs of an Embryo Earl". the title is held by his grandson, the nineteenth Earl, whose father had died in 1999. He is a Fellow of the Zoological Society of London, and still lives in Australia.