Ellen Marie Hewett1 
Charles Robert Hewett1 
Child of Charles Robert Hewett and Jane Eleanor Slack
Jane Eleanor Slack1
From 26 January 1894, her married name became Hewett.1
Child of Jane Eleanor Slack and Charles Robert Hewett
W. Upton Slack1
Child of W. Upton Slack
William Upton Hewett1
Robert Basil Duff Hewett1 
Children of Robert Basil Duff Hewett and Anna Muriel Harrison
- James Duff Hewett+1 b. Jan 1891, d. 27 Oct 1955
- Dorothy Duff Hewett1 b. 17 Apr 1892, d. 5 Nov 1962
- Norman Henry Duff Hewett1 b. 20 Jun 1898, d. 17 Feb 1916
- Philip Duff Hewett1 b. 9 Nov 1901, d. 8 Aug 1923
- Basil Duff Hewett1 b. 9 Aug 1906, d. 14 Dec 1944
- Patrick Duff Hewett1 b. 17 Mar 1909, d. 23 Jan 1978
Anna Muriel Harrison1 
From 9 April 1889, her married name became Hewett.1
Children of Anna Muriel Harrison and Robert Basil Duff Hewett
- James Duff Hewett+1 b. Jan 1891, d. 27 Oct 1955
- Dorothy Duff Hewett1 b. 17 Apr 1892, d. 5 Nov 1962
- Norman Henry Duff Hewett1 b. 20 Jun 1898, d. 17 Feb 1916
- Philip Duff Hewett1 b. 9 Nov 1901, d. 8 Aug 1923
- Basil Duff Hewett1 b. 9 Aug 1906, d. 14 Dec 1944
- Patrick Duff Hewett1 b. 17 Mar 1909, d. 23 Jan 1978
Henry Nevinson Harrison1
Child of Henry Nevinson Harrison and Louisa Maria Ross
- Anna Muriel Harrison+1 b. 19 Mar 1868, d. 16 Nov 1955
Louisa Maria Ross1
Child of Louisa Maria Ross and Henry Nevinson Harrison
- Anna Muriel Harrison+1 b. 19 Mar 1868, d. 16 Nov 1955
James Duff Hewett1 
He was educated at Wanganui Collegiate School, Wanganui, New ZealandG.1 He fought in the First World War between 1915 and 1918, with the Royal Flying Corps.1 He was awarded the Croix de Guerre.1 He gained the rank of officer in 1924 in the Royal New Zealand Air Force.1
Children of James Duff Hewett and Amy Ethelinda Brown
- S/Ldr. James Duff Hewett+1 b. 7 Oct 1913, d. 31 Dec 1941
- Ellen Philippa Hewett1 b. 22 May 1924, d. 1999
