Diana Elizabeth Gibb1
From 16 February 1967, her married name became Trefgarne.1 From 2 July 1981, her married name became Seymour.3
Children of Diana Elizabeth Gibb and Hon. Trevor Garro Trefgarne
- Rupert Michael Garro Trefgarne3 b. 1972
- Oliver Edward Garro Trefgarne3 b. 1974
- Susannah Julia Trefgarne3 b. 1976
Child of Diana Elizabeth Gibb and Lt.-Col. Conway John Edward Seymour
- Emily Diana Seymour3 b. 25 Mar 1992
Hildegarde de Bourgogne 
Child of Hildegarde de Bourgogne and Guillaume VIII, Duc d’Aquitaine
- Guillaume IX, Duc d’Aquitaine+ b. 22 Oct 1071, d. bt 10 Feb 1126 – 1127
Hon. Trevor Garro Trefgarne1
He was educated at Cheltenham College, Cheltenham, Gloucestershire, England.3 He graduated from Cranfield Institute of Technology, EnglandG, in 1967 with a Postgraduate Diploma of Industrial Management.2 He was chairman of Nesco Investments plc between 1979 and 1987.2 He lived in 2003 at 30 Kimbell Gardens, London, England.2
Children of Hon. Trevor Garro Trefgarne and Diana Elizabeth Gibb
- Rupert Michael Garro Trefgarne3 b. 1972
- Oliver Edward Garro Trefgarne3 b. 1974
- Susannah Julia Trefgarne3 b. 1976
Children of Hon. Trevor Garro Trefgarne and Caroline France Gosschalk
- Mark Michael Garro Trefgarne3 b. 1982
- Camilla Amélie Trefgarne3 b. 1988
George Morgan Trefgarne, 1st Baron Trefgarne1 
He was given the name of Geroge Morgan Garro-Jones at birth.3 He was educated at Caterham School, Caterham, Surrey, EnglandG.2 He gained the rank of officer in 1913 in the Denbighshire Yeomanry.2 He fought in the First World War.2 He gained the rank of officer in the Royal Flying Corps.3 He gained the rank of Advisory Officer in 1918 in the U.S. Air Service.2 He was private secretary to Lord Greenwood, Department of Overseas Trade and Chief Secretary of Ireland in 1919.2 He was admitted to Gray’s Inn in 1923 entitled to practise as a barrister-at-law.2 He held the office of Member of Parliament (M.P.) (Liberal) for South Hackney between October 1924 and May 1929.3 In 1928 memb: Empire Parly Mission W Africa , Electoral Machinery Ctee 1941.2 He held the office of Member of Parliament (M.P.) (Liberal) for North Aberdeen between November 1935 and June 1945.3 He was Private Sec to Lord Greenwood at Home Office, Parly Sec Minister Production in 1942.2 He held the office of Parliamentary Secretary, Ministry of Production in 1942.3 He was chairman of Radio Production Committee between 1942 and 1945.2 He was chairman of Central Priority Committee and Raw Materials Committee between 1944 and 1945.3 He was chairman of TV Advisory Committee between 1945 and 1947.3 He was founder and chairman of Colonial Development Corporation between 1947 and 1950.2 He was created 1st Baron Trefgarne, of Cleddau, co. Pembroke [U.K.] on 21 January 1947.2 He was chairman of W. E. Sykes Ltd.3 On 21 January 1954 his name was legally changed to Geroge Morgan Trefgarne by Deed Poll.3
Children of George Morgan Trefgarne, 1st Baron Trefgarne and Elizabeth Churchill
- David Garro Trefgarne, 2nd Baron Trefgarne+3 b. 31 Mar 1941
- Hon. Trevor Garro Trefgarne+1 b. 18 Jan 1944
- Hon. Mary Elizabeth Trefgarne3 b. 12 Jul 1946
- Hon. Gwion Noel Garro Trefgarne+3 b. 2 Apr 1953
Janet Emily Gibb1
From 1978, her married name became Higham.2
Children of Janet Emily Gibb and Robin David Higham
- Jessica Barbara Higham2 b. 1982
- Edwina Higham2 b. 1984
Dangereuse de l’Isle-Bouchaard 
She was also known as Mauberergeonne.
Child of Dangereuse de l’Isle-Bouchaard and Aimery I de Rochefoucauld, Vicomte de Châtellérault
- Eleanor Châtellérault de Rochefoucauld+ b. 1103, d. a Mar 1130
Boson II de Châtellérault, Vicomte de Châtellérault 
He gained the title of Vicomte de Châtellérault.
Child of Boson II de Châtellérault, Vicomte de Châtellérault and Aenora de Thouars
Aenora de Thouars 
Child of Aenora de Thouars and Boson II de Châtellérault, Vicomte de Châtellérault
Aimery IV de Thouars, Vicomte de Thouars 
He gained the title of Vicomte de Thouars.
Child of Aimery IV de Thouars, Vicomte de Thouars and Arengarde de Mauleon
- Aenora de Thouars+ d. a 1108
Bartelmy de l’Isle-Bouchaard
Child of Bartelmy de l’Isle-Bouchaard and Gerberg (?)
- Dangereuse de l‘Isle-Bouchaard+ d. a 1119