Thomas Pelham-Holles, 1st Duke of Newcastle

Thomas Pelham-Holles, 1st Duke of Newcastle-upon-Tyne and 1st Duke of Newcastle-under-Lyne, KG, PC (1693–1768) was a British Whig statesman, whose official life extended throughout the Whig supremacy of the 18th century. In his political career, Newcastle held the position of Prime Minister of Britain for six years, in two separate periods. While his premiership was not particularly notable, Newcastle precipitated the Seven Years' War, which would cause his resignation from his high position. After his second term as Prime Minister, he served for a short while in Lord Rockingham's government, before retiring from government.

Duke of Newcastle in The Two Georges
The Duke of Newcastle held the office of first lord of the treasury. He was among those historical figures depicted in the painting The Two Georges.