of Truro J Jago (born 1979), children's book illustrator John of Cornwall (theologian) medieval writer of the Prophecy of Merlin said to be from a lost Cornish language text Richard D. James (born 1971), electronica producer who works under pseudonyms including Aphex Twin and AFX Loveday Jenkin, Councillor for Crowan and Wendron Kenneth Hamilton Jenkin (1900–1980), Cornish historian, especially of Cornish tin mining Henry Jenner (1848–1934), scholar and leader of the revival of the Cornish language George Birch Jerrard (1804–1863), mathematician Charles Alexander Johns (1811–1874), botanist, clergyman and educator Thomas Brown Jordan (1807–1890), engineer Richard Jose (1862–1941), singer K Tony Kellow (1952–2011), footballer Allin Kempthorne (born 1972), actor Kenneth Kendall (1924–2012), newsreader and broadcaster Henry Killigrew (–1603), 16th century diplomat and ambassador Dame Laura Knight (1877–1970), artist and member of the Newlyn School Keith Halfacree (born 1965), academic, human geography L Richard Lander (1804–1834), explorer of Africa Peter Lanyon (1918–1964), abstract artist Walter Langley (1852–1922), artist and a member of the Newlyn School Cassandra Latham, contemporary witch and "village wisewoman" of St. Buryan, Cornwall John Lawn (1840–1905), gold miner in New Zealand John le Carré (1931–2020), novelist Bernard Leach (1887–1979), potter who set up a studio pottery in St Ives in the 1920s Janet Leach (1918–1997), potter, wife of Bernard Leach Charles Lee (1870–1956), novelist Michael Loam (1797–1871), inventor of the man engine John Lobb (1829–1895), founder of John Lobb Bootmaker. Richard Lower (–1691), blood transfusion pioneer Benjamin Luxon (born 1937), baritone singer M Jessica Mann (1937–2018), crime writer Al Marconi (born 1969), guitarist Mark of Cornwall, ruler of Cornwall in the legend of Tristan and Iseult (see also Tristan) Archibald Pellow Marshall (1899–1966), politician and judge William Marshall (1923–2007), potter for Bernard Leach Nigel Martyn (born 1966), former England footballer Steve Massey (born 1958), professional footballer who has played for and managed Cornish teams John Mayow (1641–1679), physiologist Rory McGrath (born 1956), comedian John Drew Mackenzie (1861–1918), painter and illustrator, started the Newlyn Copper industry Kevin Miller (born 1969), footballer who played for Crystal Palace, Birmingham City and Watford Chris Morris (born 1963), footballer who played for Glasgow Celtic and Sheffield Wednesday Matthew Paul Moyle (1788–1880), meteorologist and mining writer David Mudd (1933–2020), Conservative Party MP, local historian and broadcaster William Murdoch (1754–1839), engineer, inventor and sometime Cornish resident Sheryll Murray (born 1956), MP for South East Cornwall N Robert Morton Nance (1873–1959), scholar and archaeologist John Nettles (born