| Mercer | J B | 3445 | Sergeant | Killed in action. Bower's Hoek, 5 September 1901
Source: South African Field Force Casualty Roll | 9th (The Queen's Royal) Lancers |
| Mercer | J B | 3445 | Sergeant | QSA (6). Wounded, near Pretoria, 02 Jun 00. Killed, Bowers Hoek, 05 Sep 01.
Source: QSA medal rolls | 9th (The Queen's Royal) Lancers |
| Mercer | J B | 3445 | Sergeant | Demise: Killed in action 05 Sep 1901
Place: Graaff-Reinet Near Paardeftn
Source: In Memoriam by S Watt | 9th (The Queen's Royal) Lancers |
| Mercer | J C B | 61 | Sergeant | Died of disease. Kroonstad, 27 December 1901
Bushmen
Source: South African Field Force Casualty Roll | South Australia contingent |
| Mercer | J C B | 61 | Sergeant | Demise: Died of disease - enteric fever 21 Dec 1901
Place: Kroonstad
Source: In Memoriam by S Watt | South Australia, 3rd Bushmen's Contingent |
| Mercer | J J | 27 | Trooper | Died of wounds. Modderfontein, 1 January 1901
A Division.
Source: South African Field Force Casualty Roll | South African Constabulary |
| Mercer | J J | 27 | Trooper | Wounded. Near Pretoria, 28 December 1900
Died 1 January
Source: South African Field Force Casualty Roll | South African Constabulary |
| Mercer | J J | 27 | Trooper | Demise: Died of wounds 01 Jan 1901
Place: Modderfontein
Source: In Memoriam by S Watt | South African Constabulary |
| Mercer | J J | | | A Division
Source: QSA and KSA medal rolls | South African Constabulary |
| Mercer | J N | 33890 | Private | Source: QSA Medal Rolls | 94th Company, 24th Btn, IY |
| Mercer | J T | | | 1st Volunteer Service Company
Source: QSA and KSA medal rolls | East Lancashire Regiment |
| Mercer | J W | 119 | Corporal | Served 30 Sep 99 to 20 Mar 02.
Source: Nominal roll in WO127 | Natal Field Artillery |
| Mercer | J W | 119 | Corporal | QSA (1)
Source: List of QSAs with the clasp Elandslaagte | Natal Field Artillery |
| Mercer | James W | | | 1st Battalion
Source: QSA and KSA medal rolls | Scots Guards |
| Mercer | John | | | Source: QSA and KSA medal rolls | 84th Battery, RFA |
|
|
