| Clark | C V | | | Source: QSA and KSA medal rolls | 77th Battery, RFA |
| Clark | C W | 1860 | Trooper | 1st Life Guards. QSA (4). .
Source: QSA medal rolls | Life Guards |
| Clark | C W | 5119 | Private | QSA (3).
Source: QSA medal rolls | 12th (The Prince of Wales's Royal) Lancers |
| Clark | C W | | | 1st Battalion
Source: QSA and KSA medal rolls | Life Guards |
| Clark | Campbell John | 4075 | | Source: Attestation paper in WO126 | Brabant's Horse |
| Clark | Campbell John | | Lieutenant | Source: Nominal roll in WO127 | Prince of Wales Light Horse |
| Clark | Campbell John | 4075 | Trooper | 2nd Brabant's Horse
Source: Nominal roll in WO127 | Brabant's Horse |
| Clark | Charles | | | Source: Attestation paper in WO126 | Brabant's Horse |
| Clark | Charles | 318 | Trooper | Source: OZ-Boer database | New South Wales, 1st Battalion Australian Commonwe |
| Clark | Charles | | | Source: QSA and KSA medal rolls | New Zealand, 9th Contingent |
| Clark | Charles | 4285 | Trooper | 2nd Brabant's Horse
Source: Nominal roll in WO127 | Brabant's Horse |
| Clark | Charles Edward A | 1743 | Coy. QM Sergeant | Source: OZ-Boer database | New South Wales, 3rd Battalion Australian Commonwe |
| Clark | Charles Edward A | 951 | Trooper | Source: OZ-Boer database | New South Wales, NSW Lancers |
| Clark | Charles Edward A. | 951 | Trooper | Source: Official Records of the Australian Military Contingents by P L Murray | New South Wales, NSW Lancers |
| Clark | Charles Hastings | 149 | Trooper | Source: OZ-Boer database | New South Wales, 5th Battalion Australian Commonwe |
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