From Wikipedia

Napoleon - The End

Napoleon was imprisoned and then exiled to the island of Saint Helena in the Atlantic Ocean, 2,000 km from any major landmass. In his first two months there, he lived in a pavilion on the Briars estate, which belonged to a William Balcombe. Napoleon became friendly with his family, especially his younger daughter Lucia Elizabeth who later wrote Recollections of the Emperor Napoleon. This friendship ended in 1818 when British authorities became suspicious that Balcombe had acted as an intermediary between Napoleon and Paris, and dismissed him from the island.