thumb|Engraving of Abbott after an 1805 [[Valentine Green portrait]]
Lemuel Francis Abbott (born Lemuel Abbott; 1760/61 – 5 December 1803) was an English painter who specialised in portrait painting. He is known for his portrait of Horatio Nelson, 1st Viscount Nelson and other naval officers and literary figures of the late 18th and early 19th centuries.
Life
left|thumb|Portrait of [[Horatio Nelson, 1st Viscount Nelson.|210x210px]]
He was born Lemuel Abbott in Leicestershire in 1760 or 1761, the son of clergyman Lemuel Abbott, curate of Anstey (and later vicar of Thornton) and his wife Mary. In 1775, at the age of 14, he became a pupil of Francis Hayman and lived in London, but returned to his parents after his teacher's death in 1776.
In 1780, Abbott married Anna Maria, and again settled in London, residing for many years in Caroline Street in Bloomsbury. Although he exhibited at the Royal Academy, he never became an Academician. It is said that overwork, due to the commissions he took on, and domestic unhappiness led to his becoming insane. He was declared insane in 1798, and was treated by Thomas Munro (1759–1833), the chief physician to Bethlem Hospital and a specialist in mental disorders – Munro also treated King George III (1738–1820). The finished work won the approval of both Nelson and his wife, with lady Nelson writing that "[T]he likeliness is great; I am well pleased with Abbott." While the Nelson portrait was Abbott's most famous work, other subjects of the period included Admiral Sir Robert Calder, Rear-Admiral Sir Thomas Pasley and Captain William Locker, astronomer Sir William Herschel, poet William Cowper, artists Francesco Bartolozzi and Joseph Nollekens, entrepreneur Matthew Boulton and industrialist John Wilkinson.
His portrait of Henry Callender, Captain General of the Royal Blackheath Golf Club, is one of the earliest portrayals of the game of golf. Reproductions hang in golf clubs the world over. It was sold at Bonhams in London on 9 December 2015.
Some of his paintings were signed "Francis Lemuel Abbott", but it is not known why he assumed the additional Christian name, as it was not one with which he was baptised.