| Castle | Alfred George | 30782 | Sergeant | Source: QSA Medal Rolls | 86th Company, 22nd Btn, IY |
| Castle | C | | | 1st Battalion
Source: QSA and KSA medal rolls | (Princess of Wales's Own) Yorkshire Regiment |
| Castle | C | 2381 | Sergeant | QSA (3).
Source: QSA medal rolls | 6th (Inniskilling) Dragoons |
| Castle | C | | Leading Stoker | QSA (0). Ref: 154.772.
Source: QSA medal rolls | HMS Barracouta |
| Castle | C | | | Source: Attestation paper in WO126 | Border Horse |
| Castle | C J | | Lieutenant | CGHGSM (1) Transkei
Source: Roll of the CGHGSM | Abalondolozi Regiment |
| Castle | C M | 2183 | Sapper | To G Company. Discharged. QSA (1) sent 2 Jul 1903.
QSA (1) CC
TNA ref 155/60 | Royal Engineers, Field Company, 7th |
| Castle | Charles | 424 | Trooper | Source: Nominal roll in WO127 | Warren's Mounted Infantry |
| Castle | Charles | 7148 | Trooper | Served 27 Jun 1900 to 16 Feb1901. Discharged Cape Town completion of service
Source: Nominal roll in WO127 | Border Horse |
| Castle | Charles | 455 and 505 | Trooper | Source: Nominal roll in WO127 | Western Light Horse |
| Castle | Charles | | | Source: Attestation paper in WO126 | Brabant's Horse |
| Castle | Charles Henry | 4948 | Trooper | Source: QSA Medal Rolls | 37th Company, 10th Btn, IY |
| Castle | Charles Lionel | 27895 | Sergeant | Source: QSA Medal Rolls | 85th Company, 22nd Btn, IY |
| Castle | Christopher | 1610 | | Attested: Sep 1902. Source: CMP6 | Cape Police |
| Castle | Christopher Darley | 4333 | Private | Source: QSA Medal Rolls | 33rd Company, 11th Btn, IY |
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