| Regimental number | 964 |
| Place of birth | Brisbane Queensland |
| Religion | Church of England |
| Occupation | Farmer |
| Address | 22 Richmond Street, Leederville, Western Australia |
| Marital status | Single |
| Age at embarkation | 24 |
| Next of kin | Father, Alfred Nelson, 22 Richmond Street, Leederville, Western Australia |
| Enlistment date | 14 January 1915 |
| Rank on enlistment | Private |
| Unit name | 10th Light Horse Regiment, 5th Reinforcement |
| AWM Embarkation Roll number | 10/15/2 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A20 Hororata on 26 April 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 3rd Double Squadron |
| Fate | Returned to Australia 2 September 1916 |
| Miscellaneous details (Nominal Roll) | *William Stoyle |
| Family/military connections | Brother: 963 Pte Alec Stoyle NELSON, 1st Australian General Hospital, returned to Australia, 2 January 1919. |
| Miscellaneous details | Second given name entered on Embarkation Roll as Sloyle. |
| Date of death | 1 January 1938 |
| Place of burial | Nannup Cemetery |