Robert Clive – 1st Baron Clive of India – committed suicide with a pen knife at his home at 45 Berkeley Square in 1774. His death has been linked to a history of depression and opium addiction, although he took the opium to ease the pain of an excruciating illness. His pet giant tortoise Adwaita – The One and Only in Bengali – outlived him, dying in Calcutta zoo in 2006. It was said to have been 250 years old.