| Regimental number | 8996 |
| Place of birth | Sydney New South Wales |
| Religion | Church of England |
| Occupation | Clerk |
| Address | 226 Park Road, Paddington, New South Wales |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Mother, Mrs E W Spark, 226 Park Road, Paddington, New South Wales |
| Previous military service | 24th Infantry |
| Enlistment date | 13 July 1915 |
| Rank on enlistment | Private |
| Unit name | Infantry Brigade 4,Field Ambulance 5, Reinforcement 9 |
| AWM Embarkation Roll number | 26/48/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board RMS Osterley on 15 January 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 5th Field Ambulance |
| Fate | Returned to Australia 8 April 1919 |
| Miscellaneous details (Nominal Roll) | *Given name Clarence Lyon |
