Francis Trevithick (1812–1877) (also known to as Frank) was the eldest surviving son of Richard Trevithick (1771–1833) and Jane Harvey, engineer and inventor of the high pressure steam engine. In 1842 he was appointed the Resident Engineer on the Grand Junction Railway between Birmingham and Crewe and in 1841 became Locomotive Superintendent at the Grand Junction Railway’s works at Edge Hill. In 1843 he was transferred to Crewe Works, London and North Western Railway as Locomotive Superintendent, (Northern Division). In 1857 the North and North-Eastern Division were combined, Francis was forced to resign and was succeeded by John Ramsbottom. He went on to become factor of the Trehidy estates, Cornwall of which his grandfather had been the mineral agent in the eighteenth century. He died in Cornwall on 27 October 1877. Francis Trevithick was married to Mary Ewart (1819-1889) and had four children: Richard, Robert, Francis and Jane. He published a bibliography of his father called 'Life of Richard Trevithick' in 1872.

(1771-1833), Engineer Born in 1771 in Cornwall, Richard Trevithick was a practical engineer who developed high pressure steam engines. In 1800 he built the first of the double-acting stationary engine which was the forerunner of the famous ‘Cornish engines’. Between 1801 and 1803 he built three steam-powered road locomotives. In 1803 he built the first practical railway locomotive, a tram engine for Coalbrookdale. After that he constructed the ‘Pen-y-darren’ locomotive for Samuel Homfray, partner in the ‘Pen-y-darren Tramway’ in south Wales. Although this was not a success due to the quality of the track rather than the locomotive, it was a proof of principle. Trevithick built two more railway locomotives: one in Gateshead in 1805, possibly for the Wylam Waggon Way (which was again let down by the poor quality of the rails), and, in 1808, the ‘Catch me who Can’, for an exhibition in London. He is also important for demonstrating that a smooth wheel running on smooth iron rails was capable of hauling considerable loads. He was involved in the unsuccessful project to drive a tunnel under the Thames from Rotherhithe. In 1816 he left his family and went to South America where he was involved in mining ventures in Peru. These also were ultimately unsuccessful, in part due to the wars of independence, and Trevithick returned, penniless, to England in 1827. Despite the setbacks he experienced, Trevithick’s inventive capacity was undiminished. His last patent was granted in 1832. He went to work for J. Hall in Dartford where he died on 22nd April 1833. He was married to Jane Harvey (1772 – 1868/9), daughter of another Cornish engineer, John Harvey of Hayle Foundry and had six children, Francis and Frederick Henry, who both became engineers, and Richard, John, Ann and Elizabeth.