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 Engine and Trevithick). Trevithick represents with startling distinctness one type of inventor, the Promethean type, which has to expiate by common misfortune its uncommon fertility of brain. Notwithstanding his courage and his ingenuity, his impatience and impetuosity and a certain lack of persistence proved disastrous to his fame and fortune. ‘Many lessons which experience had taught him had to be relearned by subsequent inventors, who bore off the laurels which he might have earned’ (, Steam Engine, p. 208).

Fierce but tender-hearted, buoyant yet easily depressed and recklessly imprudent, Trevithick was in many respects a typical Cornishman. In person he was 6 feet 2 inches in height, broad-shouldered, with a massive head and bright blue eyes. His bust was presented to the Royal Institution of Cornwall by W. J. Henwood, and his portrait by Linnell (1816) is in the South Kensington Museum. A portrait is also included in the engraved group prefixed to Walker's ‘Memoirs of Distinguished Men of Science,’ 1862.

[Trevithick's achievements, somewhat obscured by the eulogists of Watt and of Stephenson, were first brought into a just prominence in the Life of Richard Trevithick, with an Account of his Inventions, London, 1872, 2 vols. 8vo, by Francis Trevithick (with numerous plates and drawings)—a partial and confused but conscientious monument of biographical research. See also Polwhele's Hist. of Cornwall, iv. 137; Gilbert's Cornwall, ii. 394; Edmonds's Lands End District, p. 254; Tregellas's Cornish Worthies, ii. 307 sq.; Boase and Courtney's Bibl. Cornub.; Lysons's Environs, i. 355; Smiles's Lives of the Engineers, iii. 80–5; Devey's Joseph Locke, pp. 67–74; Rennie's Autobiogr. p. 230; Walker's Mem. of Dist. Men of Science, 1864, pp. 126–32; Stuart's Descriptive Hist. of Steam Engine, p. 162; Stuart's Anecdotes of Steam Engine, 1829, p. 455; Lardner's Lectures on the Steam Engine, 1828, and The Steam Engine Explained, 1851; Tredgold's Steam Engine, 1838, p. 41; Alban's High-pressure Steam Engine; Pole's Cornish Pumping Engine; Ritchie's Railways, 1846; Thurston's Hist. of Steam Engine, 1870, p. 174; Reynolds's Locomotive Engineer, 1879, pp. 37–48; Gordon's Hist. Treatise of Steam Carriages on Common Roads, 1832; Young's Steam Power on Common Roads, 1860, p. 175; Fletcher's Steam Locomotion on Roads, 1891; Stretton's Locomotive and its Development, 1895, pp. 5–6; Deghilage's Origine de la Locomotive, Paris, 1886, planche i.; Jeaffreson's Robert Stephenson, i. 24, 105; South Kensington Museum Catalogue of Machinery, 1886; Engineer, 1867, xxiii. 91, 177 (16 Feb. and 28 Sept. 1883); Journal Roy. Instit. of Cornwall, 1883, viii. 9, 1895, xiii. 17; Railway Register, vol. v.; Hedley's Who invented the Locomotive? 1858; Edinburgh New Philos. Journal, October 1859; All the Year Round, 4 Aug. 1860; Mining Almanack, 1849, p. 303; Practical Mag. 1873, i. 90; Hebert's Register of Arts, vi. 243; Railway Times, 16 June 1888; Devon County Standard, 23 June 1888; Graphic, 13 Oct. 1888.]  TREVOR, ARTHUR HILL-, third of the second creation in the peerage of Ireland (1798–1862), born in Berkeley Square, London, on 9 Nov. 1798, was the only surviving son of Arthur Hill-Trevor, second viscount (1763–1837), by Charlotte, third daughter of Charles Fitzroy, first baron Southampton.

His great-grandfather, Arthur Hill-Trevor (d. 1771) of Belvoir, co. Down, and Brynkinalt, Denbighshire, was the second son of Michael Hill of Hillsborough, by Anne, daughter and heir of Sir John Trevor (1637–1717) [q. v.] He inherited the Trevor property from his father's half-brother, Marcus Hill (d. 1751), who was son of William Hill and Mary, daughter of Marcus Trevor, first viscount Dungannon of the first creation [q. v.] He was chancellor of the Irish exchequer in 1754–5. On 17 Feb. 1766 he was created Viscount Dungannon and Baron Hill of Olderfleet. He died in Dublin on 30 Jan. 1771, and was buried at Belvoir. His second wife, whom he married in January 1737, was Anne, daughter and heir of Edmund Francis Stafford of Brownstown, Meath, and Portglenone, Antrim. She died on 13 Jan. 1799. Their daughter, Anne, married in February 1759 the Earl of Mornington, by whom she became mother of the great Duke of Wellington and of the Marquis Wellesley. There were two other daughters and a son Arthur, who was father by Letitia, eldest daughter of Hervey, first viscount Mountmorres, of Arthur Hill-Trevor, second lord Dungannon; he succeeded his grandfather in the title, and died at Brynkinalt on 14 Dec. 1837.

His son, Arthur Hill-Trevor, was educated at Harrow, and matriculated from Christ Church, Oxford, on 17 Oct. 1817, graduating B.A. in 1820 and M.A. in 1825. In 1830 he was elected to the House of Commons for New Romney, and in the following year for the city of Durham. He was a vigorous opponent of the reform bills of 1831–2, both in the house and outside it. On 30 Aug. 1831 he moved an amendment to the effect that the existing non-resident freemen should keep their votes during their lives. In the course of the year Trevor issued an anti-reform pamphlet in the guise of a ‘Letter to the Duke of Rutland.’ When the