10 Downing Street - Duke of Newcastle: Biography of Thomas Pelham-Holles, Duke of Newcastle, Prime Minister 1754-6; 1757-62.The Duke of Newcastle (1693-1768).: Short historical biography on one of the most influential ministers in Great Briton during the critical years when France and England fought over their possessions in North America.Thomas Pelham-Holles, 1st Duke of Newcastle under Lyne: Catalogue of letters held at the University of Nottingham Library .Thomas Pelham-Holles, Duke of Newcastle: Biography and links to related articles.