Arthur Edward Bryant Cayzer1 
Child of Arthur Edward Bryant Cayzer and Louise Margaret Birkett
- Nancy Avis Louise Cayzer+2 b. 22 Apr 1909, d. 11 Oct 1996
John Birkett1
Child of John Birkett
- Louise Margaret Birkett+2 b. c 1879, d. 14 Apr 1966
Louise Margaret Birkett1 
From 3 August 1905, her married name became Cayzer.
Child of Louise Margaret Birkett and Arthur Edward Bryant Cayzer
- Nancy Avis Louise Cayzer+2 b. 22 Apr 1909, d. 11 Oct 1996
Nancy Avis Louise Cayzer1 
From 7 March 1936, her married name became Leeson.
Child of Nancy Avis Louise Cayzer and Alister Curtis Leeson
- Ian Arthur Leeson+2 b. 13 Mar 1937
Hon. Chloe Gummer1
- [S37] BP2003 volume 1, page 739. See link for full details for this source. Hereinafter cited as. [S37]
Alister Curtis Leeson1 
Child of Alister Curtis Leeson and Nancy Avis Louise Cayzer
- Ian Arthur Leeson+2 b. 13 Mar 1937
Ian Arthur Leeson1
He was educated at Rugby School, Rugby, Warwickshire, EnglandG.1 He graduated from Oxford University, Oxford, Oxfordshire, EnglandG, with a Master of Arts (M.A.)1 He was registered as a Chartered Accountant (C.A.)1 He was appointed Fellow, Institute of Chartered Accountants (F.C.A.) in 1964.1 He lived in 2003 at Eaton House, 7 Eaton Park, Cobham, Surrey, EnglandG.1
Children of Ian Arthur Leeson and Eileen Margaret Tennent
- Sally Louise Leeson+2 b. 20 Jun 1968
- Patricia Anne Leeson2 b. 17 Mar 1971
Lt.-Col. Anderson Kirkwood Tennent1
Child of Lt.-Col. Anderson Kirkwood Tennent
Eileen Margaret Tennent1
From 7 August 1965, her married name became Leeson.
Children of Eileen Margaret Tennent and Ian Arthur Leeson
- Sally Louise Leeson+2 b. 20 Jun 1968
- Patricia Anne Leeson2 b. 17 Mar 1971
Sally Louise Leeson1
Child of Sally Louise Leeson
- Aurelia Louise Duckworth3 b. 12 Apr 2008
- [S37] BP2003 volume 1, page 738. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S5019] Sally Duckworth, “re: Leson Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 28 November 2010. Hereinafter cited as “re: Leeson Family.”
