Pilar Sanchez-Moya1
From 21 August 1968, her married name became Brennan.1 After her marriage, Pilar Sanchez-Moya was styled as Baroness Brennan on 2 May 2000.
Children of Pilar Sanchez-Moya and Daniel Joseph Brennan, Baron Brennan
- Hon. Daniel Brennan+1 b. 1971
- Hon. Patrick Brennan1 b. 1972
- Hon. Michael Brennan+1 b. 1977
- Hon. Alexander Brennan1 b. 1980
Luis Sanchez Hernandez1
Child of Luis Sanchez Hernandez
- [S37] BP2003 volume 1, page 496. See link for full details for this source. Hereinafter cited as. [S37]
Hon. Daniel Brennan1
Child of Hon. Daniel Brennan and Rebecca Usher-Smith
- Isabella Rose Brennan3 b. 10 Jun 2010
Hon. Patrick Brennan1
- [S37] BP2003 volume 1, page 496. See link for full details for this source. Hereinafter cited as. [S37]
Hon. Michael Brennan1
Children of Hon. Michael Brennan and Alejandra Mora Diaz
- Daniel Jose Brennan2 b. 20 May 2012
- Michael Peter Juan Brennan2 b. 24 Jun 2014
- Macarena Charlotte Alexandra Brennan2 b. 12 Nov 2018
Hon. Alexander Brennan1
- [S37] BP2003 volume 1, page 496. See link for full details for this source. Hereinafter cited as. [S37]
Daniel Brennan1
Child of Daniel Brennan and Mary Ahearne
- Daniel Joseph Brennan, Baron Brennan+1 b. 19 Mar 1942
- [S37] BP2003 volume 1, page 496. See link for full details for this source. Hereinafter cited as. [S37]
Mary Ahearne1
Child of Mary Ahearne and Daniel Brennan
- Daniel Joseph Brennan, Baron Brennan+1 b. 19 Mar 1942
- [S37] BP2003 volume 1, page 496. See link for full details for this source. Hereinafter cited as. [S37]
David Vivian Penrose Lewis, 1st and last Baron Brecon1 
He was educated at Monmouth School, Monmouth, Monmouthshire, WalesG.1 He held the office of member of the Brecon District Council between 1938 and 1949.3 He held the office of member of the Brecon County Council between 1946 and 1958.3 He held the office of Justice of the Peace (J.P.) for Brecon.3 He held the office of Minister of State for Welsh Affairs between 1957 and 1964.3 He was created 1st Baron Brecon, of Llanfeigan, co. Brecknock [U.K.] on 30 January 1958.1 He was appointed Privy Counsellor (P.C.) in 1960.4 On his death, his barony became extinct.3
Children of David Vivian Penrose Lewis, 1st and last Baron Brecon and Mabel Helen McColville
- Hon. Rosalind Helen Penrose Lewis+3 b. 12 Sep 1938
- Hon. Janet Mary Penrose Lewis3 b. 2 Oct 1944
- [S2] Peter W. Hammond, editor, The Complete Peerage or a History of the House of Lords and All its Members From the Earliest Times, Volume XIV: Addenda & Corrigenda (Stroud, Gloucestershire, U.K.: Sutton Publishing, 1998), page 822. Hereinafter cited as The Complete Peerage, Volume XIV.
- [S4567] Bill Norton, “re: Pitman Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 6 April 2010 and 19 April 2011. Hereinafter cited as “re: Pitman Family.”
- [S34] BP1970 page 346. See link for full details for this source. Hereinafter cited as. [S34]
- [S466] Notices, The Telegraph, London, UK, 7 September 2005. Hereinafter cited as The Telegraph.
Mabel Helen McColville1 

Mabel Helen McColville was born on 8 May 1909 at Belper, Derbyshire, England.3,4 She was the daughter of John McColville and Martha Probert.1,3 She married David Vivian Penrose Lewis, 1st and last Baron Brecon, son of Alfred William Lewis and Elizabeth Mary Morgan, on 19 April 1933.1 She died on 4 September 2005 at age 96.3
She was educated at St. Alban’s ConventG.3 From 19 April 1933, her married name became Lewis.1 After her marriage, Mabel Helen McColville was styled as Baroness Brecon on 30 January 1958. She held the office of Justice of the Peace (J.P.) for Breconshire in 1960.3 She was appointed Commander, Order of the British Empire (C.B.E.) in 1964.3 She held the office of High Sheriff of Breconshire between 1971 and 1972.3
Children of Mabel Helen McColville and David Vivian Penrose Lewis, 1st and last Baron Brecon
- Hon. Rosalind Helen Penrose Lewis+5 b. 12 Sep 1938
- Hon. Janet Mary Penrose Lewis5 b. 2 Oct 1944
- [S2] Peter W. Hammond, editor, The Complete Peerage or a History of the House of Lords and All its Members From the Earliest Times, Volume XIV: Addenda & Corrigenda (Stroud, Gloucestershire, U.K.: Sutton Publishing, 1998), page 822. Hereinafter cited as The Complete Peerage, Volume XIV.
- [S300] Michael Rhodes, “re: Ernest Fawbert Collection,” e-mail message to BENR, 8 February. Hereinafter cited as “re: Ernest Fawbert Collection.”
- [S466] Notices, The Telegraph, London, UK, 7 September 2005. Hereinafter cited as The Telegraph.
- [S4567] Bill Norton, “re: Pitman Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 6 April 2010 and 19 April 2011, says 1909. Hereinafter cited as “re: Pitman Family.”
- [S34] BP1970 page 346. See link for full details for this source. Hereinafter cited as. [S34]