| Regimental number | 774 |
| Place of birth | Stepney, South Australia |
| School | Port Adelaide Public School, South Australia |
| Religion | Church of England |
| Occupation | Wharf labourer |
| Address | Spring Street, Queenstown, South Australia |
| Marital status | Single |
| Age at embarkation | 27 |
| Height | 5' 6" |
| Weight | 158 lbs |
| Next of kin | Father, J E Marriott, Spring Street, Queenstown, Port Adelaide, South Australia |
| Previous military service | Nil |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Place of enlistment | Morphettville, South Australia |
| Rank on enlistment | Driver |
| Unit name | 10th Battalion, E Company |
| AWM Embarkation Roll number | 23/27/1 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board Transport A11 Ascanius on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 10th Battalion |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | Driver Percy Marriott sailed on the Transport A12 "Saldanha" while the rest of E Company boarded the "Ascanius" |
| Place of burial | Lone Pine Cemetery (Plot II, Row A, Grave No. 24), Gallipoli, Turkey |
| Panel number, Roll of Honour, Australian War Memorial | 59 |
| Miscellaneous information from cemetery records | Parents; John and Emily MARRIOTT, Commercial Road, Port Adelaide, South Australia |
| Family/military connections | Brother: Lt Harold MARRIOTT MM, 2nd Machine Gun Bn, returned to Australia, 17 March 1919. |
| Other details |
War service: Egypt, Gallipoli Embarked Alexandria to join the Mediterranean Expeditionary Force, Gallipoli, 2 March 1915. Admitted to No 2 Australian Stationary Hospital, Mudros, 20 July 1915; transferred to 24th Casualty Clearing Station, Mudros, 27 July 1915 (debility); rejoined unit at Gallipoli, 4 August 1915. Killed in action, 8 August 1915. Buried Victoria Gully Cemetery, near 10th Bn Headquarters; grave subsequently relocated to Lone Pine Cemetery owing to original site 'being exposed to torrential rains during certain seasons and in danger of obliteration by flooding'. Medals: 1914-15 Star, British War Medal, Victory Medal |
| Sources | NAA: B2455, MARRIOTT Percy George |