Charles Moore, 2nd Marquess of Drogheda

Charles Moore, 2nd Marquess of Drogheda (23 August 1770 – 6 February 1837), styled Viscount Moore until 1822, was an Irish peer. He went insane when he was about twenty, and spent the  rest  of his life at the private asylum at Greatford, Lincolnshire  which had been founded by the renowned physician Francis Willis.

He was the eldest son of Charles Moore, 1st Marquess of Drogheda, and Lady Anne Seymour Conway, daughter of Francis Seymour, 1st Marquess of Hertford. Some sources give his first name as Edward. When he was  about the age of twenty he began to show signs of mental illness, which may have been hereditary. He was elected to the Irish House of Commons as member for Queen's County in 1790, but unseated the following year on foot of a petition that he was disqualified by  reason of insanity. Despite this, he was given the rank of captain-lieutenant in the Royal Irish Artillery in 1793; Lord Moore's father was colonel of the regiment.

He was placed in the care of Dr Francis Willis at Greatford Hall. Willis had won renown in 1789 for curing King George III of what was thought then to be insanity  but is now generally agreed  to have been porphyria. His treatment involved a regimen of fresh air and manual labour. Whether the treatment had any success in Lord Drogheda's case is unclear, but certainly there was no obvious recovery of his mental faculties,  as there had been  in the case of the King; Drogheda  remained at Greatford until his death in 1837. He was unmarried and his titles passed to his nephew Henry Moore, 3rd Marquess of Drogheda.

The cause of his mental illness is unclear, but it may be significant that his mother's family had a history of eccentricity and mental instability. Lord Castlereagh, who committed suicide in 1822, was Lord Drogheda's first cousin and the increasingly strange behaviour which culminated in his death was thought by some to be due to a hereditary mental illness inherited from the Seymour Conway family, to which  his mother, as well as Drogheda's,  belonged.