| Mason | John G | | | Source: QSA and KSA medal rolls | 66th Battery, RFA |
| Mason | John Harrison | | | 1st Battalion
Source: QSA and KSA rolls | Imperial Light Horse |
| Mason | John Harrison | 2298 | Trooper | 1st Battalion
Source: Nominal roll in WO127 | Imperial Light Horse |
| Mason | John Henry | 12300 | Private | Source: QSA Medal Rolls | 66th Company, 3rd Btn, IY |
| Mason | John R | 4433 | Trooper | Source: Nominal roll in WO127 | Roberts' Horse |
| Mason | John Sutherland | | | 2nd Battalion
Source: QSA and KSA rolls | Imperial Light Horse |
| Mason | John Sutherland | 132 | Trooper | 2nd Battalion
Source: Nominal roll in WO127 | Imperial Light Horse |
| Mason | John Sutherland | 286 | Private | Source: Nominal roll in WO127 | Imperial Light Infantry |
| Mason | John Walter | | | Source: QSA and KSA medal rolls | New Zealand, 9th Contingent |
| Mason | John Willmore | 486 | Private | Source: OZ-Boer database | Victoria, 4th Imperial Contingent |
| Mason | Joseph | 1178 | Trooper | BSACM Matabeleland 1893 (0).
Source: BSACM rolls | Bechuanaland Border Police |
| Mason | Joseph Ernest | 743 | Private | Source: OZ-Boer database | Victoria, 2nd Battalion Australian Commonwealth Ho |
| Mason | Joseph Ernest | 495 | Trooper | Served in 1st KFS. Joined Durban 17 Jan 01 transferred 29 Apr 01 2KFS
Source: Nominal roll in WO127 | Kitchener's Fighting Scouts |
| Mason | Joseph Ernest | 495 | | Served in 2nd KFS. Joined 29 Apr 01 transferred from 1KFS 30 Apr 01 Discharged 14 Aug 01 time expired
Source: Nominal roll in WO127 | Kitchener's Fighting Scouts |
| Mason | Joseph James | 29884 | Private | Source: QSA Medal Rolls | 51st Company, 12th Btn, IY |
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