| Regimental number | 6233 |
| Place of birth | Port Augusta, South Australia |
| Religion | Methodist |
| Occupation | Farmer |
| Address | Port Vincent, South Australia |
| Marital status | Single |
| Age at embarkation | 30 |
| Next of kin | Mother, Mrs I Dempsey , Port Vincent, South Australia |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 10th Battalion, 20th Reinforcement |
| AWM Embarkation Roll number | 23/27/4 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A68 Anchises on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 27th Battalion |
| Fate | Died of wounds |
| Miscellaneous details (Nominal Roll) | *Spelt John Valantine Dempsey on NR |
| Place of burial | Martinpuick British Cemetery (Row B, Grave No. 4), France |
| Panel number, Roll of Honour, Australian War Memorial | 110 |
| Miscellaneous information from cemetery records | Town. Port Vincent, South Australia |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
