| Regimental number | 10721 |
| Date of birth | |
| Place of birth | Auckland |
| Religion | Church of England |
| Occupation | Station manager |
| Address | 'Brooklands', Metahunga, Eketahuna |
| Marital status | Single |
| Age at embarkation | 35 |
| Height | 5' 9" |
| Weight | 160 lbs |
| Next of kin | Brother, William Patrick Carlton Hay, Stock Exchange, Auckland |
| Previous military service | Auckland Mounted Rifles, Volunteer Force (1903-1904). |
| Enlistment date | |
| Place of enlistment | Trentham Camp, Upper Hutt |
| Rank on embarkation | Sergeant Major |
| Enlistment status | Volunteer |
| Unit name | New Zealand Expeditionary Force, 12th Reinforcements (2nd Draft), 1st New Zealand Cyclist Company |
| Embarkation details | Unit embarked from Wellington on board HMNZT 52 Mokoia on |
| Final rank | Captain |
| Final unit | New Zealand Cyclist Corps |
| Fate | Commenced return to New Zealand |
| Discharge date | |
| Other details |
War service: Egypt, Western Front, Mesopotamia, Persia Attached to Dunsterforce 1918 Medals: British War Medal, Victory Medal |
| Date of death | |
| Age at death | 85 |
| Sources | Nominal Roll Vol. 2: Roll 31, p. 3 |