Henry Andrews (mathematician)

Henry Andrews (1744 – 26 January 1820) was born in the village of Frieston, near Grantham, Lincolnshire, England. He established a reputation as an accomplished mathematician and astronomer.
For 43 years he worked in his spare time as 'Compiler of the tables detailing the movement of the planets' for Old Moore's Almanac. His day job was Calculator to the Board of Longitude. He had also set up a boarding school which taught trigonometry and navigation as extra subjects, as well as running a shop which sold books, stationery, barometers, thermometers, and philosophical and mathematical instruments. He was a well-respected professional and valued advisor to the Rev'd Nevil Maskelyne, the Astronomer Royal.
Andrews predicted the annular solar eclipse in 1791: