| Clark | W | | | 2nd Battalion
Source: QSA and KSA medal rolls | Highland Light Infantry |
| Clark | W | | | 1st Battalion
Source: QSA and KSA medal rolls | Highland Light Infantry |
| Clark | W | 2940 | Private | 2nd Btn. Wounded at Colenso. 15 Dec 1899.
Source: Natal Field Force Casualty Roll, page 85 line 14 | Royal Scots Fusiliers |
| Clark | W | 2940 | Private | 2nd Btn. Wounded at Colenso. 15 Dec 1899.
Source: Natal Field Force Casualty Roll, page 88 line 19 | Royal Scots Fusiliers |
| Clark | W | | | 2nd Battalion, Volunteer Service Company
Source: QSA and KSA medal rolls | (Prince Albert's) Somerset Light Infantry |
| Clark | W | | | 3rd Battalion
Source: QSA and KSA medal rolls | East Yorkshire Regiment |
| Clark | W | | | Source: QSA and KSA medal rolls | 14th Battery, RFA |
| Clark | W | | | Source: QSA and KSA medal rolls | 81st Battery, RFA |
| Clark | W | 6325 | Gunner | Killed in action. Pretoria, 22 November 1900
Ammunition Park
Source: South African Field Force Casualty Roll | Royal Field Artillery |
| Clark | W | 500 | Quarter Master Sergeant | Prisoner. Roodeval, 7 June 1900
Released
Source: South African Field Force Casualty Roll | Army Ordnance Corps |
| Clark | W | 2172 | Lance Corporal | Prisoner. Roodeval, 7 June 1900
4th Battalion. Released
Source: South African Field Force Casualty Roll | (Sherwood Foresters) Derbyshire Regiment |
| Clark | W | 6492 | Private | Prisoner. Roodeval, 7 June 1900
4th Battalion. Released
Source: South African Field Force Casualty Roll | (Sherwood Foresters) Derbyshire Regiment |
| Clark | W | 8381 | Private | Prisoner. Roodeval, 7 June 1900
4th Battalion. Released
Source: South African Field Force Casualty Roll | (Sherwood Foresters) Derbyshire Regiment |
| Clark | W | 3238 | Colour Sergeant | Severely wounded. Zand River Poort, 21 May 1901
4th Battalion. MI
Source: South African Field Force Casualty Roll | (Prince Consort's Own) Rifle Brigade |
| Clark | W | 217 | Private | Wounded. Kimberley, 25 November 1899
During Siege of Kimberley
Source: South African Field Force Casualty Roll | Cape Police |
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