"William Petty Fitzmaurice, 1st Marquess of Lansdowne, KG, PC (2 May 1737 – 7 May 1805; known as the Earl of Shelburne between 1761 and 1784, by which title he is generally known to history), was an Irish-born British Whig statesman who was the first Home Secretary in 1782 and then Prime Minister from 1782 to 1783 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.
Lord Shelburne was born in Dublin and spent his formative years in Ireland. After attending Oxford University he served in the British army during the Seven Years' War. As a reward for his conduct at the Battle of Kloster Kampen, Shelburne was appointed an aide-de-camp to George III. He became involved in politics, becoming a member of parliament in 1760. After his father's death in 1761 he inherited his title and entered the House of Lords. " - (en.wikipedia.org 29.05.2022)