| Date of birth | |
| Place of birth | Burrowa, New South Wales |
| Religion | Church of England |
| Occupation | Soldier |
| Address | 'Trewinnia', Broughton Road, Artarmon, New South Wales |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Father, William Henry Prior, 'Trewinnia', Broughton Road, Artarmon, New South Wales |
| Previous military service | Royal Military College |
| Enlistment date | |
| Rank on enlistment | Captain |
| Unit name | Brigade 9, Headquarters |
| AWM Embarkation Roll number | 23/9/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A74 Marathon on |
| Rank from Nominal Roll | Captain |
| Unit from Nominal Roll | 3rd Machine Gun Battalion |
| Promotions |
Captain Unit: 33rd Battalion Promotion date: |
| Recommendations (Medals and Awards) |
Mention in Despatches Awarded, and promulgated, 'London Gazette' No. 31448 (11 July 1919); 'Commonwealth Gazette' No. 124 (30 October 1919). |
| Fate | Returned to Australia |
| Family/military connections | Brothers: 2958 Staff Sergeant Robert Eric PRIOR, 8th Field Ambulance, effective abroad (still overseas); Captain William Henry PRIOR OBE, 3rd Bn, effective abroad (still overseas). |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
| Miscellaneous details | Second given name incorrectly entered on Embarkation Roll as Esdale. |
| Sources | NAA: B2455, PRIOR Claude Esdaile |