Augusta Beckett-Denison1 
Lucy Lee1 
From 4 October 1883, her married name became Beckett-Denison.1 From 1886, her married name became Beckett.
Children of Lucy Lee and Ernest William Beckett, 2nd Baron Grimthorpe
- Hon. Lucy Katherine Beckett+2 b. 10 Jul 1884
- Hon. Helen Muriel Beckett2 b. 23 Aug 1886, d. 16 Jun 1916
- Ralph William Ernest Beckett, 3rd Baron Grimthorpe+2 b. 3 May 1891, d. 22 Feb 1963
Julia (?)1
Child of Julia (?) and Charles Davis
- [S46] Sir Bernard Burke, A genealogical and heraldic history of the colonial gentry (London, U.K.: Heraldry Today, 1970), volume II, page 760. Hereinafter cited as Colonial Gentry.
Hon. Lucy Katherine Beckett1 
From 29 June 1926, her married name became Frost.1
Children of Hon. Lucy Katherine Beckett and Count Otto Czernin von und zu Chudenitz
- Count Paul Otto Ernst Theobald Maria Czernin von und zu Chudenitz+ b. 1904, d. 1955
- S/Ldr. Count Manfred Maria Edmund Ralph Beckett Czernin von und zu Chudenitz+ b. 1913, d. 9 Oct 1962
Richard Tasker-Evans1
- [S37] BP2003 volume 2, page 1686. See link for full details for this source. Hereinafter cited as. [S37]
Hon. Helen Muriel Beckett1 
David Nathan1 
- [S46] Sir Bernard Burke, A genealogical and heraldic history of the colonial gentry (London, U.K.: Heraldry Today, 1970), volume II, page 760. Hereinafter cited as Colonial Gentry.
Rose Nathan1 
- [S46] Sir Bernard Burke, A genealogical and heraldic history of the colonial gentry (London, U.K.: Heraldry Today, 1970), volume II, page 760. Hereinafter cited as Colonial Gentry.
Edward John Beckett, 5th Baron Grimthorpe1
He was educated at Harrow School, Harrow, London, EnglandG.2 He lived in 2003 at Westow Hall, Yorkshire, EnglandG.2 He succeeded as the 9th Baronet Beckett, of Leeds, co. Yorks and Somerby Park, Gainsboorugh, co. Lincoln [U.K., 1813] on 6 July 2003.2 He succeeded as the 5th Baron Grimthorpe, of Grimthorpe, in the East Riding, co. York [U.K., 1886] on 6 July 2003.2
Child of Edward John Beckett, 5th Baron Grimthorpe and Carey Elizabeth Graham
- Hon. Harry Maximilian Beckett2 b. 28 Apr 1993
- [S37] BP2003 volume 2, page 1686. 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. Oliver Ralph Beckett1 
He was educated at Eton College, Windsor, Berkshire, EnglandG.1 He was educated at Trinity College, Cambridge University, Cambridge, Cambridgeshire, EnglandG.1 He was appointed Fellow, Royal Society of Arts (F.R.S.A.)1
Children of Hon. Oliver Ralph Beckett and Hélène Agnes Fessas
- Sarah Christine Beckett+2 b. 20 Feb 1946
- Juliet Mary Beckett2 b. 25 May 1949
