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Laneast is the birthplace of John Couch Adams, the mathematician and astronomer who discovered Neptune.
and other notable mathematical astronomers also made significant contributions, including: Edmond Halley; Philippe Gustave le Doulcet, Comte de Pontécoulant; John Couch Adams; George William Hill; and Simon Newcomb.
Their father, William Marshall Smart, was John Couch Adams Astronomer at Cambridge University and later Regius Professor of Astronomy at Glasgow.
He served in the Royal Navy during World War I as an instructor in navigation (RN College Greenwich 1915, HMS Emperor of India 1916–19) and then returned to Cambridge in 1919 as a lecturer in Mathematics and John Couch Adams Astronomer (1921–1937).