Sir Richard St George (c.1550 – 1635) Clarenceux King of Arms
- Sir Richard St George (c.1550 – 1635) Clarenceux King of Arms (1623–1635) Head of a distinguished heraldic family.
Sir Henry St George (1581–1644) Garter Principal King of Arms
- Sir Henry St George (1581–1644) Garter Principal King of Arms (1643–1644) Eldest son of Sir Richard St George (c.1550 – 1635). Gustavus Adolphus, King of Sweden, granted the following augmentation: On an escutcheon az. three ducal coronets or.
Sir Thomas St George (1615–1703) Garter Principal King of Arms
- Sir Thomas St George (1615–1703) Garter Principal King of Arms (1686–1703) Elder son of Sir Henry St George (1581–1644)
Sir Henry St George, the younger (1625–1715) Garter Principal King of Arms
- Sir Henry St George, the younger (1625–1715) Garter Principal King of Arms (1703–1715) Younger son of Sir Henry St George (1581–1644)
Sir Richard St George (d. 1683) Ulster Kings of Arms
- Sir Richard St George (d. 1683) Ulster Kings of Arms (1660–1683) Youngest son of Sir Henry St George (1581–1644)
St George of Carrickdrumrusk in the Baronetage of Ireland (1660-1735)
Baron Saint George of Hatley Saint George in the Peerage of Ireland, First creation (1715-1735)
St George of Carrickdrumrusk
- Sir Oliver St George, 1st Baronet (d.1695) Second son Sir George St George of Carrickdrumrusk and grandson of Sir Richard St George (c.1550 – 1635)
1st Baron Saint George
- Sir George St George, 1st Baron Saint George, 2nd Baronet (d. 1735)
Baron Saint George of Hatley Saint George in the Peerage of Ireland, Second creation (1763-1775)
1st Baron Saint George
- St George St George, 1st Baron Saint George (d.1775) Born St George Ussher, son of John Ussher and The Hon. Mary Saint George, daughter of Sir George St George, 1st Baron Saint George of the first creation.
St George of Athlone in the Baronetage of Ireland (1766)
St George of Athlone
- Sir Richard St George, 1st Baronet (d. 1789) Descended from Richard St George of Athlone, third son of Sir Richard St George (c.1550 – 1635).
- Sir Richard Bligh St George, 2nd Baronet (1765–1851)
- Sir Theophilus John St George, 3rd Baronet (1816–1857)
- Sir Richard de Latour St George, 4th Baronet (1837–1861)
- Sir John St George, 5th Baronet (1851–1938)
- Sir Theophilus John St George, 6th Baronet (1856–1943)
- Sir Robert Alan St George, 7th Baronet (1900–1983)
- Sir Denis Howard St George, 8th Baronet (1902–1989)
- Sir George Bligh St George, 9th Baronet (1908–1995)
- Sir John Avenel Bligh St George, 10th Baronet (b. 1940)