Lady Eleanor Butler1 
After her marriage, Lady Eleanor Butler was styled as Viscountess Lismore on 11 August 1808. From 11 August 1808, her married name became O’Callaghan.1
Children of Lady Eleanor Butler and Cornelius O’Callaghan, 1st Viscount Lismore
- Captain Hon. William Frederick O’Callaghan1 d. 1836
- Lady Anne Maria Louisa O’Callaghan+1 d. 6 Jul 1867
- Hon. Cornelius O’Callaghan1 b. 1809, d. 16 Aug 1849
- George Ponsonby O’Callaghan, 2nd Viscount Lismore+1 b. 16 Mar 1815, d. 29 Oct 1898
- [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 180. Hereinafter cited as The New Extinct Peerage.
- [S37] BP2003 volume 2, page 2809. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
Hon. Cornelius O’Callaghan1 
He gained the rank of officer in the 12th Lancers.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 180. Hereinafter cited as The New Extinct Peerage.
Captain Hon. William Frederick O’Callaghan1 
He gained the rank of Captain in the 44th Foot.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 180. Hereinafter cited as The New Extinct Peerage.
George Ponsonby O’Callaghan, 2nd Viscount Lismore1 
He gained the rank of officer in the 17th Lancers.1 He held the office of High Sheriff of County Tipperary in 1853.1 He held the office of Lord-Lieutenant of County Tipperary between 1857 and 1885.1 He succeeded as the 2nd Baron Lismore of Shanbally Castle, co. Tipperary [U.K., 1838] on 30 May 1857.1 He succeeded as the 2nd Viscount Lismore, of Shanbally, co. Tipperary [I., 1806] on 30 May 1857.1 He succeeded as the 3rd Baron Lismore of Shanbally, co. Tipperary [I., 1785] on 30 May 1857.1
Children of George Ponsonby O’Callaghan, 2nd Viscount Lismore and Mary Norbury
- Hon. George Cornelius Gerald O’Callaghan2 b. 3 Nov 1846, d. Mar 1885
- Hon. William Frederick Ormonde O’Callaghan2 b. 14 Nov 1852, d. 20 Apr 1877
Lady Anne Maria Louisa O’Callaghan1 
From 10 May 1841, her married name became Prittie.1 After her marriage, Lady Anne Maria Louisa O’Callaghan was styled as Baroness Dunalley of Kilboy on 10 October 1854.
Children of Lady Anne Maria Louisa O’Callaghan and Henry Prittie, 3rd Baron Dunalley of Kilboy
- Eleanor Mary Prittie2 d. 30 Dec 1847
- Hon. Cornelia Elizabeth Prittie2 b. c 1851, d. 28 Dec 1888
- Henry O’Callaghan Prittie, 4th Baron Dunalley of Kilboy+3 b. 21 Mar 1851, d. 5 Aug 1927
- [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 180. Hereinafter cited as The New Extinct Peerage.
- [S37] BP2003 volume 1, page 1202. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
Henry Prittie, 3rd Baron Dunalley of Kilboy1 
He held the office of High Sheriff of County Tipperary in 1840.4 He held the office of Deputy Lieutenant (D.L.) of County Tipperary.4 He succeeded as the 3rd Baron Dunalley of Kilboy, co. Tipperary [I., 1800] on 10 October 1854.4
Children of Henry Prittie, 3rd Baron Dunalley of Kilboy and Lady Anne Maria Louisa O’Callaghan
- Eleanor Mary Prittie4 d. 30 Dec 1847
- Hon. Cornelia Elizabeth Prittie4 b. c 1851, d. 28 Dec 1888
- Henry O’Callaghan Prittie, 4th Baron Dunalley of Kilboy+3 b. 21 Mar 1851, d. 5 Aug 1927
- [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 180. Hereinafter cited as The New Extinct Peerage.
- [S47] BIFR1976 Bagwell, page 51. See link for full details for this source. Hereinafter cited as. [S47]
- [S37] BP2003 See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
Mary Norbury1 
From 25 July 1839, her married name became O’Callaghan.1 After her marriage, Mary Norbury was styled as Viscountess Lismore on 30 May 1857.
Children of Mary Norbury and George Ponsonby O’Callaghan, 2nd Viscount Lismore
- Hon. George Cornelius Gerald O’Callaghan2 b. 3 Nov 1846, d. Mar 1885
- Hon. William Frederick Ormonde O’Callaghan2 b. 14 Nov 1852, d. 20 Apr 1877
George Norbury1
Child of George Norbury
- Mary Norbury+1 d. 15 Apr 1900
- [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 180. Hereinafter cited as The New Extinct Peerage.
Hon. George Cornelius Gerald O’Callaghan1 
- [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 181. Hereinafter cited as The New Extinct Peerage.
Rosina Williams1
From before 1874, her married name became Follet.1 From 24 November 1874, her married name became O’Callaghan.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 181. Hereinafter cited as The New Extinct Peerage.