| Clark | William Ralph | 421 | Trooper | Source: Nominal roll in WO127 | Kimberley Horse |
| Clark | William Richard | 22074 | Private | Source: QSA Medal Rolls | 20th Company, 6th Btn, IY |
| Clark | William Richard | 44774 | Private | Source: QSA Medal Rolls | 128th Company, 28th Btn, IY |
| Clark | William Walter B | | Trooper | Source: Nominal roll in WO127 | Gorringe's Flying Column |
| Clark | Wm Delaney | | | Source: Medal rolls | Canada, Royal Canadian Artillery |
| Clark(e) | William | 50 | Private | NGRRA, QSA (1) DoL. Resident Magistrate. Served 12 - 22 Dec 99 | Ladysmith TG |
| Clark-Kennedy | John William James | | Lieutenant | Source: QSA Medal Rolls | 8th Company, 4th Btn, IY |
| Clark-Kennedy | William Hew | 13088 | Trooper | Source: QSA Medal Rolls | 51st Company, 12th Btn, IY |
| Clark? | Harry | | | 1st Battalion
Source: QSA and KSA medal rolls | Manchester Regiment |
| Clarke | | | A | Source: QSA Medal Rolls | Imperial Yeomanry Hospital |
| Clarke | | 5181 | Private | Killed. Kaalfontein, 24 November 1900
2nd Battalion. By lightning
Source: South African Field Force Casualty Roll | Royal Dublin Fusiliers |
| Clarke | | 6598 | Private | Prisoner. Blood River Poort, 17 September 1901
2nd Battalion. Released
Source: South African Field Force Casualty Roll | Royal Fusiliers (City of London Regiment) |
| Clarke | | 6095 | Private | Prisoner. Frederikstad, 5 August 1900
2nd Battalion. Released
Source: South African Field Force Casualty Roll | Royal Scots Fusiliers |
| Clarke | | 3456 | Private | Wounded. Near Wepener, 8-24 April 1900
1st Battalion.
Source: South African Field Force Casualty Roll | Border Regiment |
| Clarke | | 14546 | Trooper , 20th IY | 1st Battalion
Source: Nominal roll in WO127 | Imperial Light Horse |
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