The Grenfell Papers (1820-1952) comprise three boxes of correspondence, log books and other manuscripts and printed material, mainly relating to Grenfell's career in the Brazilian navy.
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John Pascoe Grenfell (1800-1869), Admiral in the Brazilian Navy, entered the service of the East India Company at 11, and subsequently served in South America. In 1826 his valour in battle against Argentina lost him his right arm. In 1846 Grenfell was appointed consul-general in Liverpool, a position he held until his death.
Whilst overseeing the trial of the Liverpool-built ship-of-war Alfonzo, he helped rescue passengers and crew from the emigrant ship Ocean Monarch which caught fire in the mouth of the Mersey, and was awarded the gold medal of the Liverpool Shipwreck Society.