Name
- Otamendi, Miguel1
- Palmer, J-, of the General Post Office1
- Payne, Thomas, of Add MS 335391
- Pepys, William Weller, 2nd Baronet 18251
- Perrin, William Philp1
- Petty, John Henry, Earl of Wycombe, and (1805) 2nd Marquis of Lansdowne1
- Pfaff de Pfaffenhoffen, Graf, ' Chargé des pouvoirs des princes, frères du Roi de France.'1
- Pierre Francois Basan and Poignant, Messrs, engravers1
- Pietri1
- Pirch, Franz Otto von?, General1
- Pitt, William, 1st Earl of Chatham, Prime Minister, called 'the elder', 1708-17781
- Poll, Jean van1
- Potocki, Stanilas Felix, Maréchal Général de la Confédération de Targowiça1
- Powys, Thomas, MP for county Northamptonshire, afterwards Baron Lilford1
- Priestley, Joseph1
- Priestley, Joseph, Dr1
- Pringle, Robert, Colonel; of Add MS 344461
- Rayneval, wife of Joseph Mathias Gérard de Rayneval1
- Rechteren, Dutch Minister at Madrid1
- Renfner1