Name
- Passek, Peter Bogdanowitsch, General, Governor of White Russia1
- Pattle, T-, junior1
- Pattle, Thomas1
- Payne, Thomas, of Add MS 335391
- Peake, W-1
- Peel, Robert, 1st Baronet1
- Perceval, Charles George, 2nd Baron Arden1
- Petit, Louis Hayes, Barrister1
- Pitt, William Morton, FRS, MP for Dorsetshire1
- Poli, I-1
- Poluchroniados, Constantine1
- Porteous, William, DD1
- Powys, Thomas, MP for county Northamptonshire, afterwards Baron Lilford1
- Pratt, Elizabeth, daughter of Lord Camden1
- Pringle, Thomas, Secretary to the Anti-Slavery Society1
- Prynne, William, of Add MS 335391
- Queipo de Llano, Jose Maria, Spanish Statesman1
- Raigersfeld, Baron, Secretary to the German Minister in London1
- Rammohun Roy, of Add MS 335461
- Rashleigh, Jonathan, of Add MS 335441