Lewis Evans (1755–1827), by his wife, Ann Norman, was baptised in August 1777.
[1] In or about 1797 Evans appears to have taken charge of a private observatory at Blackheath belonging to William Larkins, formerly accountant-general to the East India Company in Bengal.
After the death of Larkins, 24 April 1800, he was taken on as an assistant by Nevil Maskelyne at the Royal Observatory, Greenwich, but resigned the post in 1805.
[1] In that year, or perhaps in 1803, Evans was appointed mathematical master under his father at the Royal Military Academy, Woolwich.
[1] By his marriage in 1797 to Deborah, daughter of John Mascall of Ashford, Kent, Evans had five children: This article incorporates text from a publication now in the public domain: "Evans, Thomas Simpson".