Irish-born Louis Lenagan came to Trinidad with the intent to fill a post in the government service. By the 1820’s he had become a member of the Cabildo and was in charge of the running and maintenance of the wharf whilst co-running a hardware business. After Louis’ death, the island passed in ownership to his son and subsequently the government repossessed the island after the son’s death, using it as a quarantine locale. The rocky island is located approximately six miles from Port of Spain and is approximately 0.27 hectares. There is an eastern passage between Caledonia and Lenagan and there is a view of Rock Island from the South of the island. Carrera and Kronstadt can be viewed from the West. Upon the formation of Nelson as a quarantine depot for the East Indian Indentured labourers in 1866, Lenagan became a hospital for Indians who would have contracted contagious diseases during their journey. Those Indians who died from illness were cremated upon a platform on the Western end of the island, and their ashes were subsequently scattered in the ocean below. This platform is no longer visible on the island. In order to curb the spread of disease on the island an autoclave and boiler were used to purify the linens used by the infected immigrants. Currently the island is under the protection of the National Trust of Trinidad and Tobago as a heritage site, housing only ruins and beautiful purple-flowering Savonetta Trees.