| Regimental number | 3946 |
| Place of birth | Lamlash Scotland |
| Religion | Presbyterian |
| Occupation | Leather dresser |
| Address | Karilpa Street, West End, Brisabane, Queensland |
| Marital status | Single |
| Age at embarkation | 25 |
| Next of kin | Sister, Miss Janet Watson, Ivy Bank, Lanbagh, Isle of Man |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 26th Battalion, 9th Reinforcement |
| AWM Embarkation Roll number | 23/43/3 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A62 Wandilla on |
| Rank from Nominal Roll | Lance Corporal |
| Unit from Nominal Roll | 1st Anzac Cyclists' Battalion |
| Fate | Died of disease |
| Miscellaneous details (Nominal Roll) | *Spelt William McLaren Watson on NR |
| Place of burial | Villers-Bretonneux Military Cemetery (Plot XIIIa, Row AA, Grave 10), Fouilloy, France |
| Panel number, Roll of Honour, Australian War Memorial | 185 |
| Miscellaneous information from cemetery records | Parents: Archibald and Barbara WATSON. |