| Place of birth | Newcastle New South Wales |
| Religion | Church of England |
| Occupation | Journalist |
| Address | Evening Penny Post, Goulbourn, New South Wales |
| Marital status | Single |
| Age at embarkation | 24 |
| Next of kin | Mother, Mrs Louisa Jane Lyne, 'Rothsay', Prince Albert Street, Mosman, Sydney, New South Wales |
| Enlistment date | 16 September 1915 |
| Date of enlistment from Nominal Roll | 1 November 1915 |
| Rank on enlistment | 2nd Lieutenant |
| Unit name | 35th Battalion, 5th Reinforcement |
| AWM Embarkation Roll number | 23/52/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A11 Ascanius on 25 October 1916 |
| Rank from Nominal Roll | Lieutenant |
| Unit from Nominal Roll | 35th Battalion |
| Fate | Returned to Australia 8 August 1919 |
| Miscellaneous details (Nominal Roll) | *Stated to be Mortimer Eustace Lyne on NR |