Name
- Neville, George, Master of Magdalene College, Cambridge1
- Nicholson, Samuel, Captain1
- North, Miss1
- O'Neill, John, MP for Randalstown, county Antrim1
- Ogle, George, Governor of Wexford1
- Oliphant, of Add MS 344141
- Ord, William, of Whitfield Hall, county Northumberland1
- Otamendi, Miguel1
- Palmer, William, of Add MS 344571
- Parker, Hyde, junior, Commodore1
- Parliament, Ireland1
- Parry, Edmund, Chairman of the EI Co1
- Paterson, Marcus, Chief Justice of Common Pleas, Ireland1
- Payne, Frances Lambertina Christiana Charlotte Harriet Theresa, wife of Ralph, Baron Lavington1
- Payne, John, of Add MS 344561
- Payne, Thomas, of Add MS 335391
- Peltier du Doyer1
- Pepys, William Weller, 2nd Baronet 18251
- Percy, Hugh, formerly Smithson 2nd Duke of Northumberland1
- Perrin, William Philp1