William Beresford, 1st Viscount Beresford

William Carr Beresford, 1st Viscount Beresford, was a British army officer and politician. A general in the British Army and a Marshal in the Portuguese Army, he fought alongside the Duke of Wellington in the Peninsular War and held the office of Master-General of the Ordnance in 1828 in the First Wellington ministry. He led the 1806 failed British invasion of Buenos Aires.