Ivan Douglas Rundell Guinness1 
He was educated at Winchester College, Winchester, Hampshire, EnglandG.1 He gained the rank of officer in the Irish Guards.1
Child of Ivan Douglas Rundell Guinness and Mairead FitzGerald
- Kevin Michael Rundell Guinness2 b. 20 Nov 1953
Michael FitzGerald1
Child of Michael FitzGerald
Mairead FitzGerald1
County Dublin.3 Claxton.3 Norfolk.)3 Kilhney.3 She lived Rock Lodge.3 From 2 October 1952, her married name became Guinness.
Child of Mairead FitzGerald and Ivan Douglas Rundell Guinness
- Kevin Michael Rundell Guinness2 b. 20 Nov 1953
Kevin Michael Rundell Guinness1
He was educated at Winchester College, Winchester, Hampshire, EnglandG.1 He lived in 2003 at Upper Wraxall, Wiltshire, England.3
Pamela Patience Guinness1
From 7 October 1944, her married name became St. John.
Children of Pamela Patience Guinness and Commander Michael Beauchamp St. John
- Andrew Beauchamp St. John3 b. 27 Aug 1945
- Clare Pamela St. John+3 b. 28 May 1947
- Hermione Patience St. John+3 b. 14 Apr 1951
Ordalie von Papius1
From 5 June 2004, her married name became von Wartenberg.1
Frederick Roberts Guinness1 
He was educated at Rugby School, Rugby, Warwickshire, England.3 City of London Club.)3 County Wexford.3 BUllciody.3 Frederick Roberts Guinness also went by the nick-name of Bobs.1 He was educated at Rugby School, Rugby, Warwickshire, EnglandG.1 He was chairman of Dreyfus & Company SA.1
Child of Frederick Roberts Guinness
Children of Frederick Roberts Guinness and Emma Nora Shelton
- Howard Michael Shelton Guinness+2 b. 31 Jan 1929
- Jeremy Guinness+2 b. 8 May 1931
Grantley Deane Shelton1
Child of Grantley Deane Shelton
- Emma Nora Shelton+2 d. 13 Aug 1975
Emma Nora Shelton1 
Emma Nora Shelton usually went by her middle name of Nora.1 From 15 January 1925, her married name became Guinness.
Children of Emma Nora Shelton and Frederick Roberts Guinness
- Howard Michael Shelton Guinness+2 b. 31 Jan 1929
- Jeremy Guinness+2 b. 8 May 1931
Howard Michael Shelton Guinness1
Children of Howard Michael Shelton Guinness and Jacqueline Brink
- Caroline Alice Guinness2 b. 23 Jul 1954
- Peter Brian Guinness2 b. 1957
