Lieutenant Alexander Perceval Matheson1

He fought in the First World War.1 He gained the rank of Lieutenant in the Royal Army Service Corps.1 He gained the rank of Acting Flight Commander in the Royal Flying Corps.1
- [S37] BP2003 volume 2, page 2645. See link for full details for this source. Hereinafter cited as. [S37]
2nd Lieutenant Roderick Kyrle Matheson1

He fought in the First World War.1 He gained the rank of 2nd Lieutenant in the Royal West Kent Regiment.1
- [S37] BP2003 volume 2, page 2645. See link for full details for this source. Hereinafter cited as. [S37]
Captain Allan Keith Mackenzie1

He gained the rank of Captain in the Grenadier Guards.1 He fought in the First World War, where he was wounded.1
Child of Captain Allan Keith Mackenzie and Hon. Alexandra Louvima Elizabeth Knollys
- Sir Alexander George Anthony Allan Mackenzie of Glenmuick, 4th Bt.+1 b. 4 Jan 1913, d. 5 Jan 1993
- [S37] BP2003 volume 2, page 2504. See link for full details for this source. Hereinafter cited as. [S37]
Hon. Alexandra Louvima Elizabeth Knollys1 
Hon. Alexandra Louvima Elizabeth Knollys usually went by her middle name of Louvima.2 From 19 December 1911, her married name became Mackenzie.1 From 10 November 1922, her married name became Checkley.1
Child of Hon. Alexandra Louvima Elizabeth Knollys and Captain Allan Keith Mackenzie
- Sir Alexander George Anthony Allan Mackenzie of Glenmuick, 4th Bt.+1 b. 4 Jan 1913, d. 5 Jan 1993
Richard Henry Spencer Checkley1
Sir Alexander George Anthony Allan Mackenzie of Glenmuick, 4th Bt.1 
Sir Alexander George Anthony Allan Mackenzie of Glenmuick, 4th Bt. usually went by his middle name of Allan.1 He was educated at Stowe School, Buckingham, Buckinghamshire, EnglandG.1 He held the office of Page Honour to HM King George V between 1924 and 1931.1 He was with the Royal Canadian Mounted Police between 1932 and 1937.1 He fought in the Second World War.1 He gained the rank of Captain in the Black Watch (RHR) Canada.1 He was awarded the Canadian Decoration (C.D.)1 He succeeded as the 4th Baronet Mackenzie, of Glenmuick, co. Aberdeen [U.K., 1890] on 18 April 1944.1
Children of Sir Alexander George Anthony Allan Mackenzie of Glenmuick, 4th Bt. and Marjorie McGuire
- Margaret Ann Mackenzie2 b. 7 Jun 1939, d. 1989
- Kathryn Heather Mackenzie2 b. 8 May 1946
- Linda Alexandra Mackenzie+2 b. 19 Nov 1949
- Allain Fenton Mackenzie+2 b. 23 Jun 1953
Sir Arthur William Mackworth, 6th Bt.1 
He succeeded as the 6th Baronet Mackworth, of the Gnoll, Glamorgan [G.B., 1776] on 8 September 1857.3 He gained the rank of Lieutenant in 1861 in the Royal Engineers.3 He gained the rank of Captain in 1873.3 He gained the rank of Major in 1881.3 He gained the rank of Lieutenant-Colonel in 1882.3 He gained the rank of Egyptian Campaign in 1882.3 He was commander of the Royal Engineers, South Wales between 1883 and 1888.3 He gained the rank of Colonel in 1886.3 He held the office of Justice of the Peace (J.P.) for Monmouthshire.3 He was commander of the Royal Engineers, West Indies between 1888 and 1889.3 He held the office of Deputy Lieutenant (D.L.) of Monmouthshire.3 He was commander of the Royal Engineers, Aldershot between 1894 and 1899.3 He was Companion, Order of the Bath (C.B.) in 1897.3 He lived at Glen Usk, Monmouthshire, Wales.3
Children of Sir Arthur William Mackworth, 6th Bt. and Alice Kate Cubitt
- Gwyneth Mackworth2 b. 2 Aug 1866, d. 25 Aug 1938
- Digby Mackworth2 b. 20 May 1868, d. 6 Jan 1900
- Helen Mackworth2 b. 15 Feb 1870, d. 19 Aug 1951
- Sir Humphrey Mackworth, 7th Bt.1 b. 11 Jul 1871, d. 2 May 1948
- Mary Josephine Mackworth2 b. 25 Oct 1872, d. 24 Dec 1960
- Beryl Katherine Mackworth2 b. 2 Feb 1875, d. 1 Jan 1954
- Francis Julian Audley Mackworth+1 b. 15 Sep 1876, d. 1 Nov 1914
- Sir Harry Llewellyn Mackworth, 8th Bt.2 b. 17 Mar 1878, d. 18 Nov 1952
- Vice-Admiral Geoffrey Mackworth+2 b. 20 Jun 1879, d. 4 Mar 1952
- Dorothy Mackworth2 b. 20 Sep 1880, d. 23 Apr 1943
- Lieutenant Arthur Christopher Paul Mackworth1 b. 24 Jan 1886, d. 25 Nov 1917
- John Dolben Mackworth+2 b. 26 Jun 1887, d. 5 Sep 1939
Alice Kate Cubitt1 
From 18 October 1865, her married name became Mackworth.1
Children of Alice Kate Cubitt and Sir Arthur William Mackworth, 6th Bt.
- Gwyneth Mackworth2 b. 2 Aug 1866, d. 25 Aug 1938
- Digby Mackworth2 b. 20 May 1868, d. 6 Jan 1900
- Helen Mackworth2 b. 15 Feb 1870, d. 19 Aug 1951
- Sir Humphrey Mackworth, 7th Bt.1 b. 11 Jul 1871, d. 2 May 1948
- Mary Josephine Mackworth2 b. 25 Oct 1872, d. 24 Dec 1960
- Beryl Katherine Mackworth2 b. 2 Feb 1875, d. 1 Jan 1954
- Francis Julian Audley Mackworth+1 b. 15 Sep 1876, d. 1 Nov 1914
- Sir Harry Llewellyn Mackworth, 8th Bt.2 b. 17 Mar 1878, d. 18 Nov 1952
- Vice-Admiral Geoffrey Mackworth+2 b. 20 Jun 1879, d. 4 Mar 1952
- Dorothy Mackworth2 b. 20 Sep 1880, d. 23 Apr 1943
- Lieutenant Arthur Christopher Paul Mackworth1 b. 24 Jan 1886, d. 25 Nov 1917
- John Dolben Mackworth+2 b. 26 Jun 1887, d. 5 Sep 1939
Lieutenant Arthur Christopher Paul Mackworth1 
He graduated from Magdalen College, Oxford University, Oxford, Oxfordshire, EnglandG, with a Master of Arts (M.A.)1 He was a Fellow in 1913 at Magdalen College, Oxford University, Oxford, Oxfordshire, EnglandG.1 He gained the rank of Temporary Lieutenant in the Rifle Brigade.1
- [S34] BP1970 page 1711. See link for full details for this source. Hereinafter cited as. [S34]
Francis Julian Audley Mackworth1

He gained the rank of Captain in the Royal Field Artillery.2 He fought in the First World War in 1914, where he was mentioned in despatches.2
Children of Francis Julian Audley Mackworth and Dorothy Conran Lascelles
- Cecily Joan Mackworth+2 b. 15 Aug 1911, d. 22 Jul 2006
- Helen Margaret Mackworth2 b. 18 Feb 1914, d. 24 Sep 1938
- [S37] BP2003 volume 2, page 2517. See link for full details for this source. Hereinafter cited as. [S37]
- [S34] BP1970 page 1711. See link for full details for this source. Hereinafter cited as. [S34]
- [S7661] David Tunbridge, “re: Lascelles Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 24 July 2015. Hereinafter cited as “re: Lascelles Family.”
