(my 8th Great grandfather) Thomas Pelham-Holles, 1st Duke of Newcastle upon Tyne and 1st Duke of Newcastle-under-Lyne 1693–1768 was a British Whig statesman with enormous power and influence. He is commonly referred to as the Duke of Newcastle. A protégé of Sir Robert Walpole, he served in his administration until 1742. PM from 1757 to 1762. He was Lord of the Privy Seal in the 1st Rockingham ministry.