| Duncan | John | 39875 | Private | Source: QSA Medal Rolls | Imperial Yeomanry |
| Duncan | John | 18747 | Sergeant | Served 27 Jun 1900 to 15 May 1901. Discharged Vaalkop completion of service
Source: Nominal roll in WO127 | Border Horse |
| Duncan | John Donaldson | | | Source: WO100/284 | Pietersburg TG |
| Duncan | John James | 4139 | Private | QSA (5) CC Wep Tr Witt SA01
Source: Wepener Siege Account and Medal Roll | Royal Scots (Lothian Regiment) |
| Duncan | John Mustard | 35404 | Sergeant | Served 25 Apr 01 to 08 Nov 01. Discharged Completion of Service C.T.
Source: Nominal roll in WO127 | Scottish Horse |
| Duncan | John Mustard | 35404 | Sergeant | 1st Battalion
Source: QSA Medal Rolls | Scottish Horse |
| Duncan | John Patterson | | Orderly | Source: Nominal roll in WO127 | Imperial Hospital Corps |
| Duncan | John Smith | 1339 | Trooper | Source: Nominal roll in WO127 | Thorneycroft's Mounted Infantry |
| Duncan | Johnston | | Bearer | Joined 09 Dec 99
Source: Nominal roll in WO127 | Natal Volunteer Ambulance Corps |
| Duncan | Joseph Thompson | 23 | | Occupation: Railway Clerk. Next of kin: Sister. Address: Belfast Ireland.
Source: Attestation paper in WO126 | Town Guard and District Mounted Troops |
| Duncan | Joseph Thompson | | | Source: WO100/252 | Imperial Military Railways |
| Duncan | Lewis | 39701 | Private | Source: QSA Medal Rolls | 134th Company, 29th Btn, IY |
| Duncan | Lewis | 1471749 | | Attested: Sep 1902. Source: CMP 11 | Cape Police |
| Duncan | M B | | | Received the Mediterranean Medal
3rd Battalion
Source: Medal roll WO100 368 | (Duke of Albany's Ross-shire Buffs) Seaforth Highl |
| Duncan | M M | | | Source: WO100/283 | King Williamstown TG |
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