John Pascoe Grenfell

John Pascoe Grenfell
Admiral John Pascoe Grenfell
Born	20 September 1800 Battersea, London, England
Died	20 March 1869 (aged 68) Liverpool, UK
Allegiance	Empire of Brazil
Service/branch	Brazilian Navy
Rank	Admiral
Battles/wars	Independence of Brazil Cisplatine War Ragamuffin War Platine War
Other work	Diplomat

John Pascoe Grenfell (20 September 1800 – 20 March 1869) was a British-Brazilian officer and diplomat of the Empire of Brazil. He spent most of his service in South America campaigns, most notably under the leadership of Lord Cochrane and Commodore Norton (). He was the nephew of British politician Pascoe Grenfell and grandfather to General Sir John Grenfell Maxwell. He was a knight grand cross of the Imperial Order of the Rose and a knight of the Imperial Order of the Southern Cross.

John Pascoe Grenfell was born on 20 September 1800 to John Maugham Grenfell and his wife Sophia Turner. In 1811 he entered the service of the British East India Company, and in 1819 he joined the Chilean republic under Lord Cochrane. He took part in most of the conflicts undertaken by Lord Cochrane during the War of Chilean Independence, and rose to the rank of lieutenant. On 5 November 1820 Grenfell was injured in the cutting of the Esmeralda the last major Spanish warship in the South Pacific. In 1823 now holding the rank of commander he followed Lord Cochrane to Brazil, to fight in the Brazilian War of Independence. In August 1823, Grenfell in command of the small brig Dom Miguel sailed to Pará and using a similar tactic used by Lord Cochrane at Maranham, forced the surrender of the junta governativa by making them think a larger fleet was following. On 29 July 1826, under the command of Commodore Norton, he lost his arm in the Cisplatine War. He then returned to England to recuperate.