Oliver Crewdson1
- [S1122] Peerage News, online http://peeragenews.blogspot.co.nz/. Hereinafter cited as Peerage News.
Mary Crawford1
From 26 May 1824, her married name became Warren.
Children of Mary Crawford and Reverend Robert Warren
- Emma Elizabeth Warren2 d. 1 Apr 1866
- Sarah Warren+2 d. 14 Nov 1907
- Margaretta Warren2 d. 8 Oct 1911
- Robert Warren+2 b. 8 Oct 1826, d. 6 May 1903
- Maj.-Gen. Richard Warren+2 b. 31 May 1828, d. 8 Oct 1913
- Major William Henry Warren2 b. 22 Oct 1839, d. 22 May 1882
- Augustus Charles James Warren2 b. 13 May 1846
Robert Warren1 
Children of Robert Warren and Helen Sophia Ponsonby Braddell
- Mary Frances Warren2 d. 22 May 1941
- Sophia Louise Clowser Warren2 d. 28 Jun 1951
- Alice Sarah Warren2 d. 24 Sep 1944
- Antoinette Maude Warren2 d. 7 Aug 1951
- Robert Warren+2 b. 22 May 1870, d. 1947
Henry Braddell1
Child of Henry Braddell
- Helen Sophia Ponsonby Braddell+2 d. 1924
Helen Sophia Ponsonby Braddell1 
From 6 September 1859, her married name became Warren.
Children of Helen Sophia Ponsonby Braddell and Robert Warren
- Mary Frances Warren2 d. 22 May 1941
- Sophia Louise Clowser Warren2 d. 28 Jun 1951
- Alice Sarah Warren2 d. 24 Sep 1944
- Antoinette Maude Warren2 d. 7 Aug 1951
- Robert Warren+2 b. 22 May 1870, d. 1947
Robert Warren1 
Children of Robert Warren and Maria Frances Lumley Perrier
- Gladys Irene Warren2 b. 1908
- Augustus John Warren+2 b. 8 Sep 1909, d. 8 Jan 1969
William Lumley Perrier1
Child of William Lumley Perrier
- Maria Frances Lumley Perrier+2 d. 1969
Maria Frances Lumley Perrier1 
From 1 June 1904, her married name became Warren.
Children of Maria Frances Lumley Perrier and Robert Warren
- Gladys Irene Warren2 b. 1908
- Augustus John Warren+2 b. 8 Sep 1909, d. 8 Jan 1969
Augustus John Warren1 
Child of Augustus John Warren and Irene Joyce Atkins
- Reverend Robert Warren2 b. 12 Oct 1954
