
| Regimental number | 4546 |
| Place of birth | Gulgong near Cowra, New South Wales |
| School | Educated at home |
| Religion | Methodist |
| Occupation | Grazier |
| Address | Jolimont, Jandowae, Queensland |
| Marital status | Married |
| Age at embarkation | 38 |
| Next of kin | Wife, Mrs. Annie Lucinda Hamilton, Jolimont, Jandowae, Queensland |
| Previous military service | South African Irregular Forces, Kitcheners House, 12th April, 1900 - 15th January, 1901. |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 31st Battalion, 12th Reinforcement |
| AWM Embarkation Roll number | 23/48/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A64 Demosthenes on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 31st Battalion |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | *Given name James Horatio |
| Place of death or wounding | Polygon Wood, Ypres, Belgium |
| Age at death | 39 |
| Age at death from cemetery records | 39 |
| Place of burial | Hooge Crater Cemetery (Plot XVI, Row C, Grave NO. 5), Zillebeke, Belgium |
| Panel number, Roll of Honour, Australian War Memorial | 118 |
| Miscellaneous information from cemetery records | Parents: William and Mary HAMILTON; husband of A.L. HAMILTON, Coonanbarra Road, Wahroonga, New South Wales |
| Family/military connections | Cousin; Charles Leslie HamiltonNephew; Lt W.J.A. Weir, Flying CrossCousin; Herbert Percival Hamilton, killed at GallipoliCousin; Stanley Clive Hamilton, killed in France |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |