Rt. Rev. Hon. Thomas St. Lawrence1 
He graduated with a Doctor of Divinity (D.D.)1 He held the office of Bishop of Cork and Ross between 1807 and 1841.1
Children of Rt. Rev. Hon. Thomas St. Lawrence and Frances Coghlan
- Reverend Thomas St. Lawrence1 d. 1833
- Venerable Edward St. Lawrence1 d. 21 Jun 1842
- Emma St. Lawrence1 d. 1865
- Letitia St. Lawrence1 d. 1833
- Frances Elizabeth St. Lawrence1 d. 1871
- Isabella St. Lawrence+2 d. 10 Nov 1830
- Reverend Robert Kingsborough St. Lawrence1 b. 29 Sep 1797, d. Jun 1886
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 152. Hereinafter cited as The New Extinct Peerage.
- [S37] BP2003 See link for full details for this source. Hereinafter cited as. [S37]
Frances Coghlan1
Her married name became St. Lawrence.1
Children of Frances Coghlan and Rt. Rev. Hon. Thomas St. Lawrence
- Reverend Thomas St. Lawrence1 d. 1833
- Venerable Edward St. Lawrence1 d. 21 Jun 1842
- Emma St. Lawrence1 d. 1865
- Letitia St. Lawrence1 d. 1833
- Frances Elizabeth St. Lawrence1 d. 1871
- Isabella St. Lawrence+1 d. 10 Nov 1830
- Reverend Robert Kingsborough St. Lawrence1 b. 29 Sep 1797, d. Jun 1886
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 152. Hereinafter cited as The New Extinct Peerage.
Reverend Henry Coghlan1
Child of Reverend Henry Coghlan
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 152. Hereinafter cited as The New Extinct Peerage.
Reverend Thomas St. Lawrence1 
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 152. Hereinafter cited as The New Extinct Peerage.
Harriet Gary1
From 1818, her married name became St. Lawrence.1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 152. Hereinafter cited as The New Extinct Peerage.
Lt.-Gen. John Gary1
Child of Lt.-Gen. John Gary
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 152. Hereinafter cited as The New Extinct Peerage.
Venerable Edward St. Lawrence1 
He held the office of Prebendary of Cork.1 He held the office of Archdeacon of Ross.1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 152. Hereinafter cited as The New Extinct Peerage.
Elizabeth Colthurst1
Her married name became St. Lawrence.1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 152. Hereinafter cited as The New Extinct Peerage.
- [S37] BP2003 See link for full details for this source. Hereinafter cited as. [S37]
Sir Nicholas Colthurst, 3rd Bt.1 
He held the office of Member of Parliament (M.P.) for Johnstown, County Longford between 1783 and 1790.3 He succeeded as the 3rd Baronet Colthurst, of Ardum, co. Cork [I., 1744] on 15 February 1787.3 He held the office of High Sheriff of County Cork in 1788.3 He held the office of Member of Parliament (M.P.) for Castle Martyr between 1791 and 1795.3
Children of Sir Nicholas Colthurst, 3rd Bt. and Harriet La Touche
- Elizabeth Colthurst1
- Charlotte Colthurst2 d. 7 Mar 1832
- Sir Nicholas Conway Colthurst, 4th Bt.+2 b. Jan 1789, d. 22 Jun 1829
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 152. Hereinafter cited as The New Extinct Peerage.
- [S37] BP2003 See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
Reverend Robert Kingsborough St. Lawrence1 
He was the Rector at Moragh, IrelandG.1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 152. Hereinafter cited as The New Extinct Peerage.
