| Regimental number | 2049 |
| Place of birth | Leatherjacket Creek, Glen Innes Road, Grafton, New South Wales |
| Religion | Church of England |
| Occupation | Miner |
| Address | Broadmeadows, Barney's Hill, New South Wales |
| Marital status | Single |
| Age at embarkation | 38 |
| Next of kin | Brother, George Lacy, Broadmeadows, Barney's Hill, New South Wales |
| Enlistment date | 20 September 1915 |
| Date of enlistment from Nominal Roll | 16 September 1915 |
| Rank on enlistment | Private |
| Unit name | 1st Light Horse Regiment, 14th Reinforcement |
| AWM Embarkation Roll number | 10/6/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT RMS Osterley on 15 January 1916 |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 5th Divisional Ammunition Column |
| Other details from Roll of Honour Circular | A splendid rifle shot. Worked as a miner. |
| Fate | Died of disease 15 April 1917 |
| Miscellaneous details (Nominal Roll) | *Spelt Mathew Lacey on NR |
| Place of death or wounding | France |
| Age at death | 38 |
