George Hamilton Chichester, 3rd Marquess of Donegall KP GCH PC , styled Viscount Chichester until 1799 and Earl of Belfast between 1799 and 1844, was an AngloIrish landowner, courtier and politician. He served as ViceChamberlain of the Household from 1830 to 1834, as well as from 1838 to 1841, and as Captain of the Yeomen of the Guard between 1848 and 1852. Ennobled in his own right in 1841, he was also Lord Lieutenant of Antrim from 1841 to 1883 and was made a Knight of St Patrick in 1857.
Lord Donegall was born at Great Cumberland Place, London, the eldest son of Viscount Chichester by his wife Anna May, daughter of Sir Edward May, 2nd Baronet. He was educated at Eton and Christ Church, Oxford, before serving for a time as a Captain with the 11th Hussars. He was known by the courtesy title Viscount Chichester from birth until 1799 and as Earl of Belfast from 1799 to 1844.
Source: Wikipedia