Thomas Picton, Welsh-English general and politician (b. 1758)
Lieutenant-General Sir Thomas Picton (24 August 1758 – 18 June 1815) was a Welsh officer of the British Army who fought in the Napoleonic Wars. According to the historian Alessandro Barbero, Picton was "respected for his courage and feared for his irascible temperament". The Duke of Wellington called him "a rough foul-mouthed devil as ever lived", but found him capable.

Picton came to public attention initially for his alleged cruelty during his governorship (1797–1803) of Trinidad, as a result of which he was put on trial in England for approving the illegal torture of a 14-year-old girl, Luisa Calderón. Though initially convicted, Picton later had the conviction overturned arguing that Trinidad was subject to Spanish law, which permitted the use of torture. Controversy over the torture and Picton's role in the colonial slave trade continued. In 2020, Cardiff council voted to remove Picton's statue in the "Heroes of Wales" gallery in Cardiff City Hall.He is chiefly remembered for his exploits under Wellington in the Iberian Peninsular War of 1807–1814, during which he fought in many engagements, displaying great bravery and persistence. He was killed in 1815 fighting at the Battle of Waterloo, during a crucial bayonet charge in which his division stopped d'Erlon's corps' attack against the allied centre left. He was the most senior officer to die at Waterloo. He was a sitting Member of Parliament at the time of his death.