Barons St John of Bletso in the Peerage of England (1559)
Earls of Bolingbroke in the Peerage of England (1624-1711)
St John of Northwood in the Baronetage of England (1660, after 1711)
1st Baron St John of Bletso
- Oliver St John, 1st Baron St John of Bletso (died 1582)
- John St John, 2nd Baron St John of Bletso (died 1596)
- Oliver St John, 3rd Baron St John of Bletso (c. 1540–1618)
Earls of Bolingbroke
- Oliver St John, 1st Earl of Bolingbroke, 4th Baron St John of Bletso (died 1646)
- Oliver St John, 5th Baron St John of Bletso (died 1642) (writ of acceleration)
- Oliver St John, 2nd Earl of Bolingbroke, 6th Baron St John of Bletso (died 1688)
- Paulet St John, 3rd Earl of Bolingbroke, 7th Baron St John of Bletso (died 1711)
- Paulet St Andrew St John, 8th Baron St John of Bletso (died 1714)
- William St John, 9th Baron St John of Bletso (died 1720)
- Rowland St John, 10th Baron St John of Bletso (died 1722)
- John St John, 11th Baron St John of Bletso (died 1757)
- John St John, 12th Baron St John of Bletso (1725–1767)
- Henry Beauchamp St John, 13th Baron St John of Bletso (1758–1805)
- St Andrew St John, 14th Baron St John of Bletso (1759–1817)
- St Andrew Beauchamp St John, 15th Baron St John of Bletso (1811–1874)
- St Andrew St John, 16th Baron St John of Bletso (1840–1887)
- Beauchamp Mowbray St John, 17th Baron St John of Bletso (1844–1912)
- Henry Beauchamp Oliver St John, 18th Baron St John of Bletso (1876–1920)
- Moubray St Andrew Thornton St John, 19th Baron St John of Bletso (1877–1934)
- John Mowbray Russell St John, 20th Baron St John of Bletso (1917–1976)
- Andrew Beauchamp St John, 21st Baron St John of Bletso (1918–1978)
- Anthony Tudor St John, 22nd Baron St John of Bletso (born 1957)
St John of Woodford in the Baronetage of England (1660-1714)
St John of Woodford
- Sir Oliver St John, 1st Baronet (c. 1624–1662) grandson of 4th son of Oliver St John 3rd Baron St John of Bletso.
- Sir St Andrew St John, 2nd Baronet (1658–1709)
- Sir Oliver St John, 3rd Baronet (c. 1683–c. 1710)
- Sir St Andrew St John, 4th Baronet (c. 1685–1711)
- Sir Paulet St Andrew St John, 5th Baronet, 8th Baron St John of Bletso (1711–1714)
See above
Oliver St John (died c. 1497), younger brother of Sir John St John (died c. 1482), was the ancestor of the Viscounts Grandison and the Viscounts Bolingbroke and St John.
Viscounts Grandison in the Peerage of Ireland (1620)
Baron Tregoz in the Peerage of England (1626-1630)
1st Viscount Grandison
- Oliver St John, 1st Viscount Grandison and Baron Tregoz (c. 1560–1630) Peerage created with special remainder to the male issue of his niece Barbara, wife of Sir Edward Villiers, elder half-brother of George Villiers, 1st Duke of Buckingham. See House of Villiers
St John of Lydiard Tregoze in the Baronetage of England (1611)
Viscounts St John in the Peerage of Great Britain (1716)
Viscounts Bolingbroke in the Peerage of Great Britain (1712, after 1751)
St John of Lydiard
- Sir John St John, 1st Baronet (died 1648) nephew of Oliver St John, 1st Viscount Grandison.
- Sir John St John, 2nd Baronet (c. 1637–1656)
- Sir Walter St John, 3rd Baronet (1622–1708)
1st Viscount St John
- Sir Henry St John, 1st Viscount St John and Baron St John of Battersea, 4th Baronet (1652–1742) Created Baron St John of Battersea and Viscount St John, with a special remainder to his younger sons in order of their birth and the heirs male of their bodies, failing which to the heirs male of his own body (this unusual remainder was because at the time of the granting of his peerage his eldest son, Lord Bolingbroke, had been attainted)
- John St John, 2nd Viscount St John (c. 1695–1749)
Viscounts Bolingbroke
- Frederick St John, 2nd Viscount Bolingbroke, 3rd Viscount St John (died 1787)
- George Richard St John, 3rd Viscount Bolingbroke, 4th Viscount St John (1761–1824)
- Henry St John, 4th Viscount Bolingbroke, 5th Viscount St John (1786–1851)
- Henry St John, 5th Viscount Bolingbroke, 6th Viscount St John (1820–1899)
- Vernon Henry St John, 6th Viscount Bolingbroke, 7th Viscount St John (1896–1974)
- Kenneth Oliver Musgrave St John, 7th Viscount Bolingbroke, 8th Viscount St John (1927–2010)
- Henry FitzRoy St John, 8th Viscount Bolingbroke, 9th Viscount St John (1957–2011)
- Nicholas Alexander Mowbray St John, 9th Viscount Bolingbroke, 10th Viscount St John (born 1974)
Viscounts Bolingbroke in the Peerage of Great Britain (1712)
1st Viscount Bolingbroke
- Henry St John, 1st Viscount Bolingbroke and Baron St John of Lydiard Tregoze (1678–1751) eldest son of 1st Viscount St John. Created Baron St John of Lydiard Tregoze and Viscount Bolingbroke, with remainder, failing his own male issue, to his father and the heirs male of his body. Earl of Bolingbroke in the Jacobite Peerage (1715). Attainted in 1715 and restored to his estates but not his honours in 1725.
- Frederick St John, 2nd Viscount Bolingbroke, 3rd Viscount St John (died 1787) eldest son of John St John, 2nd Viscount St John.
See above
St John of Longthorpe in the Baronetage of Great Britain (1715-1756)
St John of Longthorpe
- Sir Francis St John, 1st Baronet (c. 1680–1756) descended from 1st Baron St John of Bletso.
Earls of Orkney in the Peerage of Scotland (1696)
9th Earl of Orkney
- George Hamilton, 1st Earl of Orkney, Viscount of Kirkwall and Lord Dechmont (1666–1737), fifth son of William Douglas-Hamilton, Duke of Hamilton and 1st Earl of Selkirk and his wife Anne Hamilton, 3rd Duchess of Hamilton.
- Anne O'Brien, 2nd Countess of Orkney (d. 1756), daughter of 1st Earl married William O'Brien, 4th Earl of Inchiquin.
- Mary O'Brien, 3rd Countess of Orkney (c. 1721–1791), daughter of 2nd Countess married Murrough O'Brien, 1st Marquess of Thomond
- Mary FitzMaurice, 4th Countess of Orkney (1755–1831), daughter of 3rd Countess married the Hon. Thomas Fitzmaurice, second son of John Petty, 1st Earl of Shelburne
- Thomas John Hamilton FitzMaurice, 5th Earl of Orkney (1803–1877)
- George William Hamilton FitzMaurice, 6th Earl of Orkney (1827–1889)
- Edmond Walter FitzMaurice, 7th Earl of Orkney (1867–1951)
- Cecil O'Bryen FitzMaurice, 8th Earl of Orkney (1919–1998)
- Oliver Peter St John, 9th Earl of Orkney (b. 1938), son of Frederick Oliver St John, son of Isabella Annie Fitzmaurice, daughter of the Hon. James Terence Fitzmaurice, fifth son of the fifth Earl of Orkney. See House of Hamilton.