The title "Duke of Newcastle" is a British noble title that has been held by several prominent families since its creation in the 17th century. The first Duke, Thomas Pelham-Holles, was made Duke in 1717 and served as Prime Minister of Great Britain. The title is associated with the city of Newcastle upon Tyne in England. The Duke of Newcastle has historically been linked to significant political and military roles. The title has been passed down through generations, with various dukes playing important parts in British history, including involvement in the House of Lords and various governmental positions.