Hon. Alan John Francis Mackay1 
He was educated at Eton College, Windsor, Berkshire, EnglandG.1 He graduated from Trinity College, Cambridge University, Cambridge, Cambridgeshire, EnglandG, with a Bachelor of Arts (B.A.)1
Children of Hon. Alan John Francis Mackay and Sonia Cecilia Helen Tylden
- Siobhan Amanda Mackay1 b. 8 Nov 1949
- Kristina Mary Mackay+2 b. 25 Jul 1951
Janet Mary Wallis1
From 3 January 1945, her married name became Mackay.1
- [S37] BP2003 volume 2, page 2030. See link for full details for this source. Hereinafter cited as. [S37]
Frederick Wallis1
Child of Frederick Wallis
- [S37] BP2003 volume 2, page 2030. See link for full details for this source. Hereinafter cited as. [S37]
Sonia Cecilia Helen Tylden1 
From 30 June 1948, her married name became Mackay.1 From 10 November 1953, her married name became Willis Fleming.2
Children of Sonia Cecilia Helen Tylden and Hon. Alan John Francis Mackay
- Siobhan Amanda Mackay1 b. 8 Nov 1949
- Kristina Mary Mackay+4 b. 25 Jul 1951
- [S37] BP2003 volume 2, page 2030. See link for full details for this source. Hereinafter cited as. [S37]
- [S1122] Peerage News, online http://peeragenews.blogspot.co.nz/. Hereinafter cited as Peerage News.
- [S466] Notices, The Telegraph, London, UK. Hereinafter cited as The Telegraph.
- [S37] BP2003. [S37]
Captain James Richard Tylden1
Child of Captain James Richard Tylden
- Sonia Cecilia Helen Tylden+1 d. 16 Feb 2022
- [S37] BP2003 volume 2, page 2030. See link for full details for this source. Hereinafter cited as. [S37]
- [S1122] Peerage News, online http://peeragenews.blogspot.co.nz/. Hereinafter cited as Peerage News.
Siobhan Amanda Mackay1
From 7 April 1973, her married name became Carver.2 She lived in 2003 at 124 Wolseley Road, Point Piper, Sydney, New South Wales, AustraliaG.1
Christopher O. B. Carver1
- [S37] BP2003 volume 2, page 2031. See link for full details for this source. Hereinafter cited as. [S37]
Colonel R. O. H. Carver1
Child of Colonel R. O. H. Carver
- [S37] BP2003 volume 2, page 2031. See link for full details for this source. Hereinafter cited as. [S37]
Kristina Mary Mackay1
From 1975, her married name became Lamb.1
Child of Kristina Mary Mackay and Simon M. F. Lamb
Simon M. F. Lamb1
Child of Simon M. F. Lamb and Kristina Mary Mackay