Hereditary peerage subsidiary to another created by the same letters patent
Peerages of this type
| Title | Letters patent | Extinct | Merged into crown |
|---|---|---|---|
| Ogilvy of Deskford and Cullen (Lordship) | 24 June 1701 | - | - |
| of Ogle (Earldom) | 16 March 1665 | 26 July 1691 | - |
| O'Grady (Barony) | 6 January 1831 | - | - |
| Oxmantown (Barony) | 2 July 1681 | - | - |
| Palmer (Barony) | 11 December 1661 | - | - |
| Parbroath (Lordship) | 8 May 1633 | - | - |
| Parker (Viscountcy) | 15 November 1721 | - | - |
| Paston (Barony) | 19 August 1673 | 25 December 1732 | - |
| of Peebles (Viscountcy) | 20 April 1697 | - | - |
| Percy (Earldom) | 22 October 1766 | - | - |
| Petersfield (Barony) | 19 August 1673 | 3 November 1734 | - |
| Petersham (Barony) | 25 June 1674 | 24 August 1682 | - |
| Petersham (Viscountcy) | 9 February 1742 | - | - |
| Pevensey (Viscountcy) | 16 January 1816 | - | - |
| Pevensey (Viscountcy) | 14 May 1730 | - | - |
| Philipstown (Barony) | 22 December 1631 | - | - |
| Pierrepont (Barony) | 23 July 1796 | - | - |
| Pierrepont (Barony) | 29 June 1627 | - | - |
| Pitt (Viscountcy) | 4 August 1766 | - | - |
| Pleydell Bouverie (Barony) | 31 October 1765 | - | - |