| Regimental number | 1973 |
| Place of birth | Windiu, Latvia |
| Other Names | De Raupak-Ropenberg |
| School | School of Commerce, Riga, Latvia |
| Age on arrival in Australia | 18 |
| Religion | Jewish |
| Occupation | Sailor |
| Address | Sailors Home, Spencer Street, Melbourne, Victoria |
| Marital status | Single |
| Age at embarkation | 20 |
| Height | 5' 6.75" |
| Weight | 150 lbs |
| Next of kin | Brother, Gustave Lambahirt, Riga, Russia |
| Previous military service | Nil |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Place of enlistment | Melbourne, Victoria |
| Rank on enlistment | Private |
| Unit name | 5th Battalion, 5th Reinforcement |
| AWM Embarkation Roll number | 23/22/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A20 Hororata on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 5th Battalion |
| Fate | Killed in Action |
| Date of death | |
| Age at death | 21 |
| Age at death from cemetery records | 21 |
| Place of burial | Shrapnel Valley Cemetery (Plot II, Row A, Grave No. 14), Gallipoli, Turkey |
| Panel number, Roll of Honour, Australian War Memorial | 44 |
| Miscellaneous information from cemetery records | Parents: Gustav and Marie LAMBAHIRT, Sagnitz, Estonia. Native of Wenden, Latvia |
| Other details |
War service: Egypt, Gallipoli Medals: 1914-15 Star, British War Medal, Victory Medal |
| Sources | NAA: B2455, LAMBAHIRT Theodor |