Thomas Pelham-Holles, 1st Duke of Newcastle upon Tyne, 1st Duke of Newcastle-under-Lyne was an English Whig statesman who served as Prime Minister of Great Britain, and whose official life extended throughout the Whig supremacy of the 18th century. He is commonly known as the Duke of Newcastle. Born: July 21, 1693 Died: November 17, 1768 In office: March 16, 1754 – November 16, 1756 Wiki link