At least I think I have found out the history of the great Sleeping Lions at the far end of the Sculpture Gallery at Chatsworth.   They were bought by the 6th. Duke from Rinaldo Rinaldi and Francesco Benaglia shortly after Canova’s death in 1822 .   They cost 1,100 scudi and are copies of Canova’s lions on the base of his monument to Pope Clement XIII Rezzonico in St. Peter’s:-