| Regimental number | 3351 |
| Place of birth | Adelaide South Australia |
| Religion | Methodist |
| Occupation | Share farmer |
| Address | Willunga, South Australia |
| Marital status | Single |
| Age at embarkation | 33 |
| Next of kin | Father, James Marks Cornelius, Willunga, South Australia |
| Enlistment date | 23 February 1917 |
| Rank on enlistment | Private |
| Unit name | 9th Light Horse Regiment, 28th Reinforcement |
| AWM Embarkation Roll number | 10/14/5 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A73 Commonwealth on 2 November 1917 |
| Unit embarked at Melbourne per HMAT A17 'Port Lincoln' on 22 June 1917 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 9th Light Horse Regiment |
| Fate | Returned to Australia 30 August 1918 |
| Family/military connections | Brother: 1084 Driver Henry CORNELIUS, 2nd Signal Squadron, returned to Australia, 26 July 1919. |
| Other details | Medals: British War Medal, Victory Medal |
| Date of death | 19 May 1961 |
| Place of burial | Centennial Park Cemetery |
