Name
- O'Connell, Daniel, of Add MS 401221
- O'Grady, Standish, 2nd Viscount Guillamore 18401
- Orpen, Charles Edward Herbert, MD, of Dublin1
- Osborne, Ralph, formerly Bernal; MP; Secretary of the Admiralty1
- Osborne, William Godolphin, Captain; son of Francis, 1st Baron Godolphin1
- Oswald, John, Colonel; General 1837; GCB 1824; GCMG 18381
- Ottley, Richard, formerly Chief Justice of Ceylon1
- Owen, John, 1st Baronet, MP1
- Paget, Henry William, 2nd Earl of Uxbridge, 1st Marquess of Anglesey1
- Paine, Richard1
- Parker, Giulia S-, wife of W Parker1
- Parker, John, 1st Earl of Morley, politician, 1772-1840, http://isni.org/isni/000000... http://viaf.org/viaf/560352111
- Parker, Wilmot, barrister1
- Parkhurst, B-, of Trinidad1
- Patten, Jonathan, naval archilect1
- Payne, Edward, Captain; formerly 2nd Dragoons1
- Paynter, Thomas, barrister1
- Peacock, Mark Beauchamp, Solicitor to the Post Office1
- Pearl, James, Commander; RN KH 18361
- Pelham, Charles, 1st Earl of Yarborough, politician, 1781-18461