Hon. Duncan Michael William Lucas1
Percy William Lucas1
Child of Percy William Lucas
- George William Lucas, 1st Baron Lucas of Chilworth+2 b. 29 Mar 1896, d. 11 Oct 1967
George William Lucas, 1st Baron Lucas of Chilworth1 
He fought in the First World War, with the Royal Naval Air Service.1 He was President of the Manufacturers’ Agents Association of Great Britain in 1927.1 He was President of the Manufacturers’ Agents Association of Great Britain between 1941 and 1946.1 He was chairman of the National Joint Industrial Council of Motor Trade between 1943 and 1946.1 He was created 1st Baron Lucas of Chilworth, of Chilworth, co. Southampton [U.K.] on 27 June 1946.1 He was chairman of the Agriculture Marketing Accounts Marketing in 1947.1 He held the office of Lord-in-Waiting between 1948 and 1949.1 He held the office of Chief Government Whip between 1949 and 1950.1 He held the office of Parliamentary Secretary, Ministery of Transport between 1950 and 1951.1
Children of George William Lucas, 1st Baron Lucas of Chilworth and Sonia Finkelstein
- Hon. Nadia Lucas+2 b. 19 Jan 1923, d. 4 Jun 2013
- Michael William George Lucas, 2nd Baron Lucas of Chilworth+2 b. 26 Apr 1926, d. 10 Nov 2001
- Hon. Ivor Thomas Mark Lucas+2 b. 25 Jul 1927, d. 7 Apr 2018
- Hon. Tatiana Sonia Lucas+2 b. 10 Jan 1933, d. 13 Feb 2019
Marcus Finkelstein1
Child of Marcus Finkelstein
- Sonia Finkelstein+2 d. 1979
Sonia Finkelstein1 
From 24 February 1917, her married name became Lucas. After her marriage, Sonia Finkelstein was styled as Baroness Lucas of Chilworth on 27 June 1946.
Children of Sonia Finkelstein and George William Lucas, 1st Baron Lucas of Chilworth
- Hon. Nadia Lucas+2 b. 19 Jan 1923, d. 4 Jun 2013
- Michael William George Lucas, 2nd Baron Lucas of Chilworth+2 b. 26 Apr 1926, d. 10 Nov 2001
- Hon. Ivor Thomas Mark Lucas+2 b. 25 Jul 1927, d. 7 Apr 2018
- Hon. Tatiana Sonia Lucas+2 b. 10 Jan 1933, d. 13 Feb 2019
Michael William George Lucas, 2nd Baron Lucas of Chilworth1 
He was educated at Peter Symonds College, Winchester, Hampshire, EnglandG.1 He was educated at Luton College of Technology, Luton, Bedfordshire, EnglandG.1 He succeeded as the 2nd Baron Lucas of Chilworth, of Chilworth, co. Southampton [U.K., 1946] on 11 October 1967.1 He was appointed Fellow, Institute of the Motor Industry (F.I.M.I.)1 He was president of the Institute Heavy Goods Vehicle Instructors between 1972 and 1978.1 He was president of the League of Safe Drivers between 1976 and 1980.1 He was U.K. delegate to the North Atlantic Assembly between 1981 and 1983.1 He held the office of Lord-in-Waiting in 1983.1 He held the office of Parliamentary Under-Secretary of the Department of Trade and Industry between 1984 and 1987.1
Children of Michael William George Lucas, 2nd Baron Lucas of Chilworth and Ann-Marie Buck
- Simon William Lucas, 3rd Baron Lucas of Chilworth+2 b. 6 Feb 1957
- Hon. Timothy Michael Lucas+2 b. 23 Sep 1959
- Hon. Rachel Ann Lucas+2 b. 13 Feb 1963
Ronald William Buck1
Child of Ronald William Buck
- Ann-Marie Buck+2 b. 1932, d. 29 Nov 2018
Ann-Marie Buck1 
From 9 June 1955, her married name became Lucas. After her marriage, Ann-Marie Buck was styled as Baroness Lucas of Chilworth on 11 October 1967.
Children of Ann-Marie Buck and Michael William George Lucas, 2nd Baron Lucas of Chilworth
- Simon William Lucas, 3rd Baron Lucas of Chilworth+3 b. 6 Feb 1957
- Hon. Timothy Michael Lucas+3 b. 23 Sep 1959
- Hon. Rachel Ann Lucas+3 b. 13 Feb 1963
Lt.-Cdr. Southwell George Theobald Bourke1 
He was admitted to Middle Temple entitled to practise as a barrister.1 He gained the rank of Lieutenant-Commander in the Royal Navy.1 He was Stipendiary Magistrate for British Guiana in 1897.1
- [S37] BP2003 volume 2, page 2654. See link for full details for this source. Hereinafter cited as. [S37]
Hon. Timothy Michael Lucas1
He was educated between 1973 and 1978 at Lancing College, Lancing, Sussex, England.1 He graduated from University of Surrey, Guildford, Surrey, EnglandG, in 1983 with a Bachelor of Science (B.Sc.)1 He lived in 2003 at 5 Pine Tree Hill, Pyrford, Surrey, EnglandG.1
Children of Hon. Timothy Michael Lucas and Linda Ann Lainsbury
- Kirsty Ann Lucas2 b. 3 Apr 2001
- Alexander Michael Lucas3 b. 31 Mar 2004
- [S37] BP2003 volume 2, page 2425. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S8604] Tim Lucas, “re: Lucas Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 15 August 2018. Hereinafter cited as “re: Lucas Family.”