William Petty, 2nd Earl of Shelburne

William Petty Fitzmaurice, 1st Marquess of Lansdowne, known as the Earl of Shelburne between 1761 and 1784, by which title he is generally known to history, was an Anglo-Irish Whig statesman who was the first home secretary in 1782 and then prime minister in 1782–83 during the final months of the American War of Independence. He succeeded in securing peace with America and this feat remains his most notable legacy.