| Regimental number | 766 |
| Place of birth | Broken Hill New South Wales |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Beryl Street, North Broken Hill, New South Wales |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Brother, Thos. Sheehan, 10 Beryl Street, North Broken Hill, New South Wales |
| Enlistment date | 1 December 1914 |
| Rank on enlistment | Private |
| Unit name | 9th Light Horse Regiment, 3rd Reinforcement |
| AWM Embarkation Roll number | 10/14/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A4 Pera on 8 February 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 9th Light Horse Regiment |
| Fate | Returned to Australia 16 March 1919 |
| Miscellaneous details (Nominal Roll) | *Theo spelt Theodore |
