National Geographic : 1938 Nov
©Lieutenant G.I.B.Balfour, R.N. ONCE A GOAL OF WHALERS AND A LANDMARK FOR CLIPPER SHIPS, TOWERING TRISTAN NOW BROODS ABOVE ADESERTED SEA Tristao da Cunha, Portuguese admiral, gave his name to the isolated islands he discovered in 1506. The first partofthe name was later Anglicized to"Tristan." Formal annexation to Great Britain was effected in 1816. When the British garrison was withdrawn in 1817, Corporal William Glass asked tobeallowed tostay there permanently with his wife and two children. Descendants of this family still live on Tristan (page 689).