Hon. Dr. Finn Benjamin Guinness1
He was educated at Winchester College, Winchester, Hampshire, England.1 He graduated from Christ Church, Oxford University, Oxford, Oxfordshire, England, in 1968 with a Bachelor of Arts (B.A.)1 He graduated from Christ Church, Oxford University, Oxford, Oxfordshire, England, in 1972 with a Master of Arts (M.A.)1 He graduated from Edinburgh University, Edinburgh, Midlothian, Scotland, in 1973 with a Doctor of Philosophy (Ph.D.)1 He was a biologist.1
Child of Hon. Dr. Finn Benjamin Guinness and Mary Wilson Price
- Rory Guinness3 b. c 1981
Hon. Kieran Arthur Guinness1
He was educated at Winchester College, Winchester, Hampshire, England.1 He was a botanist.1 He graduated from Christ Church, Oxford University, Oxford, Oxfordshire, England, in 1971 with a Bachelor of Arts (B.A.)1 He graduated from Christ Church, Oxford University, Oxford, Oxfordshire, England, with a Master of Arts (M.A.)1
Child of Hon. Kieran Arthur Guinness and Mary Wilson Price
- Rebecca Guinness3 b. c 1979
Children of Hon. Kieran Arthur Guinness and Vivienne van Amerongen
- Kate F. V. Guinness+1 b. 1985
- Malachy Guinness1 b. 1986
- Lorcan Guinness1 b. 1989
Child of Hon. Kieran Arthur Guinness and Sophie Gräfin von Maltzan Freiin zu Wartenberg und Penzlin
- Cecily Guinness4 b. 20 Oct 2011
- [S37] BP2003 volume 2, page 2823. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S466] Notices, The Telegraph, London, UK. Hereinafter cited as The Telegraph.
- [S8263] Kieran Guinness, “re: Guinness Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 23 March 2017. Hereinafter cited as “re: Guinness Family.”
Hon. Erskine Stuart Richard Guinness1
He was educated at Winchester College, Winchester, Hampshire, England.1 He was educated at Edinburgh University, Edinburgh, Midlothian, Scotland.1 He held the office of Member of the Wiltshire County Council between 1979 and 1981.1 He was a farmer.1
Children of Hon. Erskine Stuart Richard Guinness and Louise Mary Elizabeth Dillon-Malone
- Molly Louise Guinness+3 b. 1985
- Hector Erskine Patrick Guinness+3 b. 1986
- Arthur Paris Guinness3 b. 1991
- Matthew Richard Guinness3 b. 1992
- Samuel Hugo Guinness3 b. 26 Jun 1995
- [S37] BP2003 volume 2, page 2823. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S1122] Peerage News, online http://peeragenews.blogspot.co.nz/. Hereinafter cited as Peerage News.
Hon. Rosaleen Elisabeth Guinness1
She graduated from St. Anne’s College, Oxford University, Oxford, Oxfordshire, England, in 1960 with a Bachelor of Arts (B.A.)1 She graduated from St. Anne’s College, Oxford University, Oxford, Oxfordshire, England, in 1965 with a Master of Arts (M.A.)1 From 12 June 1965, her married name became Mulji.1
Children of Hon. Rosaleen Elisabeth Guinness and Sudhir Jayantilal Mulji
- Sangita Rosaleen Mulji1 b. 19 Feb 1966
- Sachin Sudhir Mulji1 b. 6 Mar 1967
- Kabir Jayantilal Bryan Mulji1 b. 1 Jun 1970
- Gopali Sharda Elizabeth Mulji1 b. 9 Jun 1975
Hon. Fiona Evelyn Guinness1
She was educated at Cranborne Chase School, Dorset, England.1 She was educated at Millfield School, Street, Somerset, EnglandG.1 She was educated at McGill University, Montreal, Quebec, Canada.1 She was a zoologist.1 She wrote the book Red Deer, Behaviour and Ecology of Two Sexes.1
Hon. Thomasin Margaret Guinness1
She was educated at Cranborne Chase School, Dorset, England.1 She was educated at Dublin College of Art, Dublin, County Dublin, Ireland.1 She was educated at Farnham College of Art, Farnham, Hampshire, England.1 She was a potter and painter.1
Child of Hon. Thomasin Margaret Guinness
- Luke Colm Guinness1 b. 10 Feb 1979
Hon. Catriona Rose Guinness1
She was educated at Cranborne Chase School, Dorset, England.1 She was educated at Winchester County High School, Winchester, Hampshire, England.1 She graduated from Lady Margaret Hall, Oxford University, Oxford, Oxfordshire, England, in 1973 with a Bachelor of Arts (B.A.)1 She graduated from Lady Margaret Hall, Oxford University, Oxford, Oxfordshire, England, in 1977 with a Master of Arts (M.A.)1 She was a botanist and farm manager.1
Hon. Mirabel Jane Guinness1
She was educated at Cranborne Chase School, Dorset, England.1 She graduated from University of East Anglia, Norwich, Norfolk, EnglandG, in 1978 with a Bachelor of Arts (B.A.)1 She was an equestrian.1 From 10 August 1984, her married name became Helme.1 She wrote the book Biddesden Cookery, published 1987.1
Children of Hon. Mirabel Jane Guinness and Patrick Ian Helme
- Alice Mirabel Helme1 b. 1987
- Tyga Elisabeth Helme1 b. 1990
- Toby Anthony Bryan Helme1 b. 1992
- Lily Pauline Helme1 b. 1994
Lady Elizabeth Maria Guinness1
Her married name became Nugent. On 6 January 1969 she was granted the rank of an earl’s daughter.1 From 7 February 1992, her married name became Mays-Smith.1 She held the office of Justice of the Peace (J.P.) for Berkshire.1 She lived in 2003 at Chaddleworth House, Chaddleworth, Newbury, Berkshire, EnglandG.1
Children of Lady Elizabeth Maria Guinness and David Hugh Lavallin Nugent
- Charles Rupert Nugent+ b. 24 Jan 1962
- Hugo John Nugent+2 b. 11 Dec 1963
- Sheelin Rose Nugent b. 18 May 1967, d. 30 Oct 1998
- Rory David Neeld Lavallin Nugent+3 b. 2 Aug 1971
- [S37] BP2003 volume 2, page 2067. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S1122] Peerage News, online http://peeragenews.blogspot.co.nz/. Hereinafter cited as Peerage News.
Lady Henrietta Guinness1 
Lady Henrietta Guinness was born on 19 August 1942.1 She was the daughter of Major Arthur Onslow Edward Guinness, Viscount Elveden and Lady Elizabeth Cecilia Hare.1 She married Luigi Marinori on 3 February 1978.1 She died on 3 May 1978 at age 35, by her own hand.1
On 6 January 1969 she was granted the rank of an earl’s daughter.1 From 3 February 1978, her married name became Marinori.1
Child of Lady Henrietta Guinness and Luigi Marinori
- Sara Marinori1 b. 1977
