William Frederick Denning

William Frederick Denning (25 November 1848 – 9 June 1931) was a British amateur astronomer who achieved considerable success without formal scientific training. He is known for his catalogues of meteor radiants, observations of Jupiter's red spot, and for the discovery of five comets.
Career.
Denning devoted a great deal of time to searching for comets, and discovered five of them, including the periodic comet 72P/Denning–Fujikawa and the lost comet D/1894 F1. The latter was the last comet discovered on British soil until the discoveries of George Alcock.
Denning also studied meteors and novae, discovering Nova Cygni 1920 (V476 Cyg). He won the "Prix Valz" of the French Academy of Sciences for 1895. He also directed the British Astronomical Association’s Comet (1891–1893) and Meteor (1899–1900) Sections. From 1869 Denning held the combined post of secretary and treasurer of the short-lived Observing Astronomical Society.
During his life, Denning published 1179 articles in prominent scientific journals including "Nature", "The Observatory", "Astronomische Nachrichten", "Journal of the Royal Astronomical Society of Canada", "Journal des Observateurs", and "Monthly Notices of the Royal Astronomical Society".