| Regimental number | 586 |
| Place of birth | Hay, New South Wales |
| School | Marist brothers (Catholic) |
| Religion | Roman Catholic |
| Occupation | Barman |
| Address | 34 Chum Street, Bendigo, Victoria |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Mother, Mrs Beatrice Geyer, 34 Chum Street, Bendigo, Victoria |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 14th Battalion, E Company |
| AWM Embarkation Roll number | 23/31/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board A38 Ulysses on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 14th Battalion |
| Fate | Died of wounds |
| Miscellaneous details (Nominal Roll) | *Stated to be Henry Sydney Geyer on NR |
| Place of death or wounding | Gallipoli, Turkey |
| Date of death | |
| Age at death | 21 |
| Age at death from cemetery records | 21 |
| Place of burial | Chatby War Memorial Cemetery (Row H, Grave No. 80), Egypt |
| Panel number, Roll of Honour, Australian War Memorial | 72 |
| Miscellaneous information from cemetery records | Parents: J. and Mary GEYER, Chiem Street, Bendigo, Victoria |
| Family/military connections | Nil |
| Other details |
War service: Egypt, Gallipoli Medals: 1914-15 Star, British War Medal, Victory Medal |