Harriet Lucia Alexander1 
From 8 July 1875, her married name became Donnithorne.1
Children of Harriet Lucia Alexander and Lt.-Col. Edward George Moore Donnithorne
- Harold Edward Alexander Comyn Donnithorne2 b. 17 Jun 1876, d. 11 May 1955
- Lillian Loveday Emily Donnithorne2 b. 30 Aug 1881, d. 24 Dec 1974
- Loveday Isobel Donnithorne2 b. 3 Nov 1882, d. 5 Feb 1930
- Vyvyan Henry Donnithorne2 b. 8 Jan 1886, d. 12 Dec 1968
- Edith Harriette Donnithorne2 b. 22 Dec 1889, d. 3 Feb 1978
- [S47] BIFR1976 Alexander family, page 16. See link for full details for this source. Hereinafter cited as. [S47]
- [S8885] Colin Perry, “re: Fenwick Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 26 Dec 2019. Hereinafter cited as “re: Fenwick Family.”
Lt.-Col. Edward George Moore Donnithorne1 
He gained the rank of Lieutenant-Colonel in the Scots Greys.1 He held the office of Justice of the Peace (J.P.)1 He lived at Colne Lodge, Twickenham, London, EnglandG.1
Children of Lt.-Col. Edward George Moore Donnithorne and Harriet Lucia Alexander
- Harold Edward Alexander Comyn Donnithorne2 b. 17 Jun 1876, d. 11 May 1955
- Lillian Loveday Emily Donnithorne2 b. 30 Aug 1881, d. 24 Dec 1974
- Loveday Isobel Donnithorne2 b. 3 Nov 1882, d. 5 Feb 1930
- Vyvyan Henry Donnithorne2 b. 8 Jan 1886, d. 12 Dec 1968
- Edith Harriette Donnithorne2 b. 22 Dec 1889, d. 3 Feb 1978
- [S47] BIFR1976 Alexander family, page 16. See link for full details for this source. Hereinafter cited as. [S47]
- [S8885] Colin Perry, “re: Fenwick Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 26 Dec 2019. Hereinafter cited as “re: Fenwick Family.”
Edward Harris Donnithorne1 
He held the office of Justice of the Peace (J.P.)1 He held the office of Deputy Lieutenant (D.L.)1 He lived at Colne Lodge, Twickenham, London, EnglandG.1
Children of Edward Harris Donnithorne and Elizabeth Jane Moore
- Isabella Charlotte Donnithorne2 b. 21 Jun 1835, d. Oct 1855
- Henrietta Maria Donnithorne2 b. Jul 1837, d. Jul 1865
- Mary Penelope Donnithorne+3 b. 8 Jun 1839, d. 18 Mar 1918
- Lt.-Col. Edward George Moore Donnithorne+ b. 19 Jul 1842, d. 19 Nov 1906; elder son1
- [S47] BIFR1976 Alexander family, page 16. See link for full details for this source. Hereinafter cited as. [S47]
- [S8885] Colin Perry, “re: Fenwick Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 26 Dec 2019. Hereinafter cited as “re: Fenwick Family.”
- [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 274. Hereinafter cited as The New Extinct Peerage.
Ethel Bayley1 
From 22 April 1896, her married name became Alexander.1
Children of Ethel Bayley and Major John Alexander
- Jane Alexander1 b. Mar 1897
- Major John Alexander+1 b. 9 Jul 1898, d. 15 Oct 1961
- Kennett Alexander1 b. 23 Mar 1900
- William Alexander+1 b. 13 May 1901, d. 22 May 1960
- George Alexander+1 b. 1907
Major John Alexander1 
He lived at Milford, County Carlow, IrelandG.1
Children of Major John Alexander and Olive Mary Hall
- Brian Alexander1
- John Alexander1 b. 19 Sep 1927
- [S47] BIFR1976 Alexander family, page 16. See link for full details for this source. Hereinafter cited as. [S47]
Kennett Alexander1
As of 1976, Kennett Alexander lived at Fonthill House, Raheendoran, County Carlow, IrelandG.1
- [S47] BIFR1976 Alexander family, page 16. See link for full details for this source. Hereinafter cited as. [S47]
William Alexander1 
Child of William Alexander and Josephine Henderson
- [S47] BIFR1976 Alexander family, page 16. See link for full details for this source. Hereinafter cited as. [S47]
Josephine Henderson1
From October 1936, her married name became Alexander.1 As of 1976, Josephine Henderson lived at P.O. Turi, Molo, KenyaG.1
Child of Josephine Henderson and William Alexander
- [S47] BIFR1976 Alexander family, page 16. See link for full details for this source. Hereinafter cited as. [S47]
Diana Alexander1
- [S47] BIFR1976 Alexander family, page 16. See link for full details for this source. Hereinafter cited as. [S47]
George Alexander1
He was educated at Uppingham School, Uppingham, Rutland, EnglandG.1 He was a racehorse breeder and trainer.1 As of 1976, George Alexander lived at P. O. 164, Naivasha, KenyaG.1
Child of George Alexander and Anne (?)
- Penelope Alexander1 b. 1952
- [S47] BIFR1976 Alexander family, page 16. See link for full details for this source. Hereinafter cited as. [S47]
