James Agnew, 4th of Howlish Hall1 
He gained the rank of Lieutenant on 26 December 1798 in the 65th Foot.2 He gained the rank of Lieutenant on 21 March 1805 in the 14th Dragoons.2 He gained the rank of Captain on 25 November 1806 in the 6th Garrison Battery.2 He gained the rank of Captain on 17 December 1807 in the 8th Foot.2 He gained the rank of Brevet Major on 12 August 1819.2 He held the office of Colonial Secretary of the Virgin Islands on 18 July 1842.2 He held the office of Colonial Secretary of Dominica.1,2 He squandered and spent the estate.1
Children of James Agnew, 4th of Howlish Hall and Mary Eleanor Bowes
- William Agnew2 b. 19 Apr 1805, d. 3 Sep 1875
- Mary Eleanor Agnew2 b. 22 Jul 1809, d. 3 Jul 1880
- Edward Agnew2 b. 3 Jun 1812, d. 7 Sep 1883
Margaret Agnew1 
From 1795, her married name became Blennerhassett.2
Children of Margaret Agnew and Harman Blennerhassett
- Dominick Blennerhassett2 b. 1799
- Harman Blennerhassett2 b. 1801, d. 10 Aug 1854
- Joseph S. Lewis Blennerhassett+2 b. 1812, d. 8 Dec 1862
Harman Blennerhassett1 
He was educated at Westminster School, Westminster, London, EnglandG.1 He graduated from Trinity College, Dublin University, Dublin, County Dublin, IrelandG, in 1790 with a Bachelor of Arts (B.A.) and Bachelor of Law (L.L.B.)1 He lived at Castle Conway, Killorglin, County Kerry, IrelandG, which he sold to the 1st Lord Ventry in 1795.1 At Parkersburg, West Virginia, U.S.A.G, He built a mansion on Blennerhasset Island.2 He lived at Blennerhassett Island, also called Blennerhassett Island, on the Ohio River, near Parkersburg, West Virginia, Parkersburg, West Virginia, U.S.A.G.1 He was ruined by involvement in Vice President Aaron Burr’s secessionist schemes.1
Children of Harman Blennerhassett and Margaret Agnew
- Dominick Blennerhassett1 b. 1799
- Harman Blennerhassett1 b. 1801, d. 10 Aug 1854
- Joseph S. Lewis Blennerhassett+1 b. 1812, d. 8 Dec 1862
Conway Blennerhassett1 
He lived at Castle Conway, Killorglin, County Kerry, IrelandG.2
Children of Conway Blennerhassett and Elizabeth Lacy
- Catherine Blennerhassett+3
- Susan Blennerhassett+1 d. 13 Dec 1819
- John Blennerhassett2
- Thomas Blennerhassett2 d. b 1774
- Elizabeth Blennerhassett2
- Margaret Blennerhassett2
- Anne Blennerhassett+2 d. 21 Mar 1828
- Avice Blennerhassett2 d. Feb 1838
- Harman Blennerhassett+3 b. 8 Oct 1764, d. 2 Feb 1831
- [S34] BP1970 page 1499. See link for full details for this source. Hereinafter cited as. [S34]
- [S47] BIFR1976 Blennerhassett, page 137. See link for full details for this source. Hereinafter cited as. [S47]
- [S37] BP2003 volume 1, page 47. See link for full details for this source. Hereinafter cited as. [S37]
General Montgomerie Agnew1 
He gained the rank of Colonel in the Kings Dragoon Guards.1 He held the office of Governor of Carlisle Castle.1 He was educated at Breda, The NetherlandsG.1 He gained the rank of General in 1803.1
- [S37] BP2003 volume 1, page 47. See link for full details for this source. Hereinafter cited as. [S37]
Captain Alexander Agnew1 
He gained the rank of Post Captain in the Royal Navy.1 He was commander of the H.M.S. Fury in 1780 in action of Flamborough Head. After this action, he was court martialled for cowardice, and dismissed from the service.1
Child of Captain Alexander Agnew
- Major Thomas Ramsden Agnew+1 b. 1790, d. 8 Jun 1874
- [S37] BP2003 volume 1, page 47. See link for full details for this source. Hereinafter cited as. [S37]
Major Thomas Ramsden Agnew1 
He gained the rank of Major in the 82nd Regiment.1 He fought in the Peninsular Wars in 1813.1 He held the office of Governor of Tipner Fort, Portsmouth.1
Children of Major Thomas Ramsden Agnew and Anna Drury
- [S37] BP2003 volume 1, page 47. See link for full details for this source. Hereinafter cited as. [S37]
Anna Drury1 
Her married name became Agnew.1
Children of Anna Drury and Major Thomas Ramsden Agnew
- [S37] BP2003 volume 1, page 47. See link for full details for this source. Hereinafter cited as. [S37]
Captain Edward Frederick Agnew1
He was Adjutant of the Durham Militia.1 He gained the rank of Captain in the 34th Regiment.1
- [S37] BP2003 volume 1, page 47. See link for full details for this source. Hereinafter cited as. [S37]
Captain James Agnew1
He gained the rank of Captain in the 39th Regiment.1
- [S37] BP2003 volume 1, page 47. See link for full details for this source. Hereinafter cited as. [S37]