Robert Alexander1 
He lived at Boom Hall, County Londonderry, IrelandG, (so named because of its proximity to where the boom of Derry was placed during the Siege.)1
Children of Robert Alexander and Anne McCullogh
- Jane Alexander2
- Anne Alexander2 d. 18 Sep 1865
- Rebecca Alexander2
- Dorothea Alexander2
- Rt. Hon and Rt. Rev. Nathaniel Alexander+1 b. 12 Aug 1760, d. 21 Oct 1840
- Henry Alexander+2 b. 1763, d. 6 May 1818
- Elizabeth Alexander+2 b. 1763, d. 8 Apr 1835
- Lt.-Gen. William Alexander+2 b. 1768, d. 1 Jan 1824
- James Alexander+2 b. 1769, d. 12 Sep 1848
- Joseph Josias Du Pré Alexander+2 b. 1771, d. 20 Aug 1839
Anne McCullogh1 
From 1759, her married name became Alexander.1
Children of Anne McCullogh and Robert Alexander
- Jane Alexander2
- Anne Alexander2 d. 18 Sep 1865
- Rebecca Alexander2
- Dorothea Alexander2
- Rt. Hon and Rt. Rev. Nathaniel Alexander+1 b. 12 Aug 1760, d. 21 Oct 1840
- Henry Alexander+2 b. 1763, d. 6 May 1818
- Elizabeth Alexander+2 b. 1763, d. 8 Apr 1835
- Lt.-Gen. William Alexander+2 b. 1768, d. 1 Jan 1824
- James Alexander+2 b. 1769, d. 12 Sep 1848
- Joseph Josias Du Pré Alexander+2 b. 1771, d. 20 Aug 1839
Henry McCullogh1 
Child of Henry McCullogh
- Anne McCullogh+1 d. 20 Jan 1817
- [S47] BIFR1976 Alexander family, page 10. See link for full details for this source. Hereinafter cited as. [S47]
Rt. Hon and Rt. Rev. Nathaniel Alexander1 
He was educated at Harrow School, Harrow, London, EnglandG.1 He graduated from Cambridge University, Cambridge, Cambridgeshire, EnglandG, with a Doctor of Divinity (D.D.)1 He lived at Portglenone, County Antrim, IrelandG, which he built and took up residence there in 1800.1 He held the office of Bishop of Meath.1 He was appointed Privy Councillor (P.C.)1
Children of Rt. Hon and Rt. Rev. Nathaniel Alexander and Anne Jackson
- Richard Jackson Alexander1 d. 1810
- Anne Alexander+2 d. 23 Jul 1869
- Elisabeth Rebecca Alexander+2 d. 1860
- Henrietta Frances Alexander+2 d. 9 Jul 1885
- Venerable Robert Alexander+1 b. 19 Jun 1788, d. 31 Jul 1840
- Reverend James Alexander+1 b. 22 Jul 1794, d. 2 Apr 1857
- Nathaniel Alexander+1 b. 6 Dec 1796, d. 14 Oct 1880
- Henry Alexander+1 b. 16 Feb 1803, d. 1 Dec 1877
- George Alexander+2 b. 20 Jan 1805, d. 1887
- William Stuart Alexander+2 b. 29 Oct 1807, d. 9 Jul 1883
- Jane Mary Alexander2 b. 1810, d. 21 Feb 1885
Anne Jackson1 
From 18 May 1785, her married name became Alexander.1
Children of Anne Jackson and Rt. Hon and Rt. Rev. Nathaniel Alexander
- Richard Jackson Alexander1 d. 1810
- Anne Alexander+2 d. 23 Jul 1869
- Elisabeth Rebecca Alexander+2 d. 1860
- Henrietta Frances Alexander+2 d. 9 Jul 1885
- Venerable Robert Alexander+1 b. 19 Jun 1788, d. 31 Jul 1840
- Reverend James Alexander+1 b. 22 Jul 1794, d. 2 Apr 1857
- Nathaniel Alexander+1 b. 6 Dec 1796, d. 14 Oct 1880
- Henry Alexander+1 b. 16 Feb 1803, d. 1 Dec 1877
- George Alexander+2 b. 20 Jan 1805, d. 1887
- William Stuart Alexander+2 b. 29 Oct 1807, d. 9 Jul 1883
- Jane Mary Alexander2 b. 1810, d. 21 Feb 1885
Rt. Hon. Richard Jackson1 
He was appointed Privy Counsellor (P.C.)2 He lived at Coleraine, County Londonderry, IrelandG.1 He held the office of Member of Parliament (M.P.)1
Children of Rt. Hon. Richard Jackson and Anne O’Neill
- Anne Jackson+1 d. Aug 1837
- Sir George Jackson1
Anne O’Neill1 
Her married name became Jackson.1
Children of Anne O’Neill and Rt. Hon. Richard Jackson
- Anne Jackson+1 d. Aug 1837
- Sir George Jackson1
Charles O’Neill1 
Children of Charles O’Neill and Alice Brodrick
- Anne O’Neill+4
- John O’Neill, 1st Viscount O’Neill+4 b. 16 Jan 1740, d. 17 Jun 1798
- St. John O’Neill+3 b. 6 May 1741, d. 1790
- [S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume X, page 61. Hereinafter cited as The Complete Peerage.
- [S37] BP2003 volume 2, page 3010. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S47] BIFR1976 Alexander family, page 10. See link for full details for this source. Hereinafter cited as. [S47]
Piers Morony1
Child of Piers Morony
- [S37] BP2003 volume 1, page 1237. See link for full details for this source. Hereinafter cited as. [S37]
Sir George Jackson1 
He lived at Forkill, County Armagh, IrelandG.1
- [S47] BIFR1976 Alexander family, page 10. See link for full details for this source. Hereinafter cited as. [S47]
