1826; a later model was devised by Edward Mounier Boxer in 1855. It became, next to the lifeboat, the most important means of saving lives from shipwrecks. Thousands of lives were saved in that way. Death and memorials Trengrouse died at Helston on 14 February 1854; by his wife Mary, daughter of Samuel Jenken, he left three sons and five daughters. His widow (b. 9 September 1772) died at Helston on 27 March 1863. An example of his life-saving apparatus is on display at Helston Folk Museum. He is buried in the churchyard of St Michael's Church, Helston, and is commemorated in the naming of Trengrouse Way, a main thoroughfare in the town. See also Congreve rockets George William Manby Coastguards of Yesteryear: "Manby Mortar or Rocket Apparatus" References and sources Notes Other sources Gentleman's Magazine 1819 i. 559–60, 1822 ii. 71 Encyclopædia Britannica, 9th ed. xi. 143 Illustrated London News, 23 Oct. 1854 George Clement Boase and William Prideaux Courtney's Bibliotheca Cornubiensis Boase's Collect. Cornub. External links UKTV History channel: Henry Trengrouse 1772 births 1854 deaths Inventors from Cornwall Engineers from Cornwall People from Helston