He succeeded Castlereagh as Britain's delegate to the Congress of Vienna.
This man's earliest political post was Governor of Seringapatam, to which he was appointed by his older brother, Lord Mornington. Under this man's government, the Test Act was repealed and the Catholic Emancipation Act was passed. He succeeded Castlereagh as Britain's delegate to the Congress of Vienna. He is the only man to have concurrently held the offices of (*) Prime Minister and Commander-in-Chief of the British Army. For 10 points, name this politician, who was given a dukedom a year before he ended the Napoleonic Wars with a victory at Waterloo.
This man's earliest political post was Governor of Seringapatam, to which he was appointed by his older brother, Lord Mornington.
Duke of {Wellington} [or Arthur {Wellesley}, Duke of {Wellington}]