Florence Rumney1 
From 15 September 1887, her married name became Lonsdale.1 After her marriage, Florence Rumney was styled as Baroness Armaghdale on 17 January 1918.
- [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 XIII, page 272. Hereinafter cited as The Complete Peerage.
William Rumney1
Child of William Rumney
- Florence Rumney1 d. 2 Feb 1937
- [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 XIII, page 272. Hereinafter cited as The Complete Peerage.
Thomas Lonsdale1 
He lived at Loughall, County Armagh, IrelandG.1
Child of Thomas Lonsdale
- James Lonsdale+1 b. 10 Feb 1826, d. 26 Aug 1913
- [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 6. Hereinafter cited as The New Extinct Peerage.
Harriet Rolston1
From 1856, her married name became Lonsdale.1
Child of Harriet Rolston and James Lonsdale
- [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 6. Hereinafter cited as The New Extinct Peerage.
Thomas Lonsdale1 
He lived at Hawthornden, Hooton, Cheshire, EnglandG.1
Children of Thomas Lonsdale and Mary Alice McClintock
- Lieutenant James Raymond McClintock Lonsdale1 b. 16 Mar 1894, d. Nov 1914
- Esme Georgina Lonsdale1 b. 25 Apr 1895
- Vera Isabella Lonsdale1 b. 9 May 1897
- Thomas Leopold McClintock Lonsdale1 b. 8 Aug 1899
- [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 6. Hereinafter cited as The New Extinct Peerage.
John Rolston1
Child of John Rolston
- [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 6. Hereinafter cited as The New Extinct Peerage.
Mary Alice McClintock1
From 22 July 1891, her married name became Lonsdale.1
Children of Mary Alice McClintock and Thomas Lonsdale
- Lieutenant James Raymond McClintock Lonsdale1 b. 16 Mar 1894, d. Nov 1914
- Esme Georgina Lonsdale1 b. 25 Apr 1895
- Vera Isabella Lonsdale1 b. 9 May 1897
- Thomas Leopold McClintock Lonsdale1 b. 8 Aug 1899
- [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 6. Hereinafter cited as The New Extinct Peerage.
Elizabeth Eleanor Colles Nevill1
She graduated with a Bachelor of Arts (B.A.)1 From 28 July 1943, her married name became Dobbs.1 She lived in 1976 at Bayview, Dugort, Achill Island, County Mayo, IrelandG.1 She lived in 1976 at Knockdolian, 8 Ailesbury Grove, Dublin, County Dublin, IrelandG.1
Children of Elizabeth Eleanor Colles Nevill and Neil Osborne Dobbs
- Hugh Nevill Dobbs1 b. 11 Apr 1945
- Francis Fitzgerald Dobbs1 b. 10 Mar 1952
- Cecily Marion Dobbs1 b. 31 Oct 1954
- [S47] BIFR1976 page 372. See link for full details for this source. Hereinafter cited as. [S47]
Lieutenant James Raymond McClintock Lonsdale1

He gained the rank of Lieutenant in the 4th Hussars.1 He fought in the First World War.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 6. Hereinafter cited as The New Extinct Peerage.
Thomas Leopold McClintock Lonsdale1
- [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 6. Hereinafter cited as The New Extinct Peerage.
