Name
- Otis, Harrison Gray, President of the Senate of Massachusetts1
- Otto, Louis Guillaume, Comte de Mosloy, French diplomatist1
- Outlaw, Robert, of Newport, county Shropshire1
- Paberna, Vincenzo, Captain1
- Page, Robert Leman, Rector of Panfield1
- Paget, Berkeley, M P for Anglesey1
- Pakenham, Thomas, 2nd Earl of Longford1
- Panin, Nikita Petrovich, Count, Russian Minister of Foreign Affairs1
- Paoli-Chagny, Comte de1
- Parker, Marianne, wife of Sir P Parker, 2nd Baronet, and (1818) of M Bruce1
- Parker, Wilmot, of Add MS 382811
- Parkinson, John, attorney1
- Parliament1
- Parsons, John, Reverend 1807-1810 Master of Balliol, Vice-Chancellor of Oxford University1
- Paxtons, Cookerill, Trail and Co1
- Payne, Daniel Beaumont1
- Pearson, Jos-, of Wolverhampton1
- Peel, Robert, 1st Baronet1
- Peel, Robert, 2nd Baronet, Prime Minister, 1788-18501
- Pelham, Thomas, Baron Pelham, 2nd Earl of Chichester1