Patagonia. The road to Fitzroy, Argentina, Chile border. Francisco Moreno first saw the mountain on 2 March 1877. He named it Fitz Roy, in honour of Robert FitzRoy, who, as captain of the HMS Beagle had travelled up the Santa Cruz River in 1834 and charted large parts of the Patagonian coast.
By Charles Darwin - Journal of researches into the natural history and geology of the countries visited during the voyage around the world of H. M. S. 'Beagle' under the command of Captain Ftiz Roy, R. N., - Biodiversity Heritage Library