| Williamson | R C | 1788 | Lance Sergeant | Frontier Wars. SAGS (1) 1879 | (Princess Louise's) Sutherland and Argyll Highland |
| Williamson | R C | | | 4th Battalion
Source: Medal rolls | (Princess Louise's) Sutherland and Argyll Highland |
| Williamson | R E | | | 1st Battalion
Source: QSA and KSA medal rolls | Essex Regiment |
| Williamson | R E | | | Volunteer Special Service Company, 1st Battalion
Source: QSA and KSA medal rolls | Essex Regiment |
| Williamson | R F | | | Volunteer Special Service Company, 1st Battalion
Source: QSA and KSA medal rolls | Essex Regiment |
| Williamson | R H | 23008 | Private | Source: QSA Medal Rolls | 11th Company, 3rd Btn, IY |
| Williamson | R J | | | Source: WO100/279 | Natal Government Railways |
| Williamson | Richard | 9436 | Private | Source: QSA Medal Rolls | 46th Company, 12th Btn, IY |
| Williamson | Richard | 32049 | Private | Source: QSA Medal Rolls | 110th Company, 2nd Btn, IY |
| Williamson | Richard Thompson | 600 | Sergeant | Source: QSA Medal Rolls | 9th Company, 3rd Btn, IY |
| Williamson | Robert | | Trooper | Source: Nominal roll in WO127 | Scottish Horse |
| Williamson | Robert | 33406 | Trooper | Served 13 Feb 01 to 03 Sep 02. Discharged Aldershot
Source: Nominal roll in WO127 | Scottish Horse |
| Williamson | Robert | 44711 | Trooper | Served 17 Apr 02 to 07 Jul 02. Discharged Disbandment to N.P.
Source: Nominal roll in WO127 | Scottish Horse |
| Williamson | Robert | 44711 | Trooper | 2nd Battalion
Source: QSA Medal Rolls | Scottish Horse |
| Williamson | Robert | 29072 | Trooper | 2nd Battalion
Source: QSA Medal Rolls | Scottish Horse |
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