 Complete the following phrase:  Mangles was the son of John Mangles 17601837, brother of James Mangles 17621838, the Member of Parliament. He entered the navy in March 1800, on board the frigate , with Captain Ross Donnelly, whom in 1801 he followed to . After active service on the coast of France, at the reduction of the Cape of Good Hope, and at the British invasions of the Río de la Plata, he was, on 24 September 1806, promoted to be lieutet of , in which, in February 1809, he was present at 