| Mason | J W | 2000 | Private | Frontier Wars. SAGS (1) 1879 | Northamptonshire Regiment |
| Mason | J W | 3829 | Private | QSA (3).
Source: QSA medal rolls | 14th (The King's) Hussars |
| Mason | J W | 4331 | Private | QSA (2).
Source: QSA medal rolls | 16th (The Queen's) Lancers |
| Mason | J William | 27989 | Trooper | Source: QSA Medal Rolls | 32nd Company, 2nd Btn, IY |
| Mason | James | 3158 | Trooper | Source: OZ-Boer database | New South Wales, 3rd Contingent NSW Imperial Bushm |
| Mason | James | 7766 | Gunner | QSA known to exist. QSA (1)
Source: List of QSAs with the clasp Defence of Kimberley | Royal Garrison Artillery |
| Mason | James | | Private | Source: Nominal roll in WO127 | Rand Rifles |
| Mason | James Cooper | | Lieutenant | MASON, JAMES COOPER, Lieutenant, was born in Toronto in 1875, eldest son of Brigadier General the Honourable James Mason, Senator. He was educated at Toronto Collegiate Institute, and served as Lieutenant and Captain, Royal Canadian Regiment, in South Africa from 1899 to 1900, being present in operations in the Orange Free State, including operations at Paardeberg (18 February), during which he was slightly wounded; operations in Orange River Colony and Transvaal, west of Pretoria, August 1900; operations in the Transvaal, east of Pretoria, July to 29 November 1900. He was mentioned in Despatches [London Gazette, 10 September 1901]; was given the Brevet of Major, the Queen's Medal with three clasps, and was created a Companion of the Distinguished Service Order [London Gazette, 27 September 1901]: "James Cooper Mason, Lieutenant, Canadian Contingent. In recognition of services during the operations in South Africa". He became Major 1 February 1902; was appointed Brigade Major of the 8th Canadian Infantry Brigade 9 December 1909, and became Lieutenant Colonel and Commanding Officer of his regiment, the 10th Royal Grenadiers Militia of Canada, 21 July 1915. Lieutenant Colonel Mason was a Banker. He married, in 1904, Jean Florence, daughter of Alexander MacArthur.
Source: DSO recipients (VC and DSO Book) | Canada contingent |
| Mason | James Edward | 27 | Private | Source: OZ-Boer database | Queensland, 5th Imperial Bushmen Contingent |
| Mason | James Semple | | Orderly | Source: Nominal roll in WO127 | Imperial Hospital Corps |
| Mason | James Semple | | Bearer | Served 09 Dec 99 to 12 Mar 00.
Source: Nominal roll in WO127 | Natal Volunteer Ambulance Corps |
| Mason | James Semple | 2835 | Private | 4th RPR
Source: Nominal roll in WO127 | Railway Pioneer Regiment |
| Mason | James Semple | 2835 | Private | 1st RPR
Source: Nominal roll in WO127 | Railway Pioneer Regiment |
| Mason | James Semple | 2835 | | Source: Attestation papers. See image on this site. | Railway Pioneer Regiment |
| Mason | James William | 2509 | Trooper | Source: Nominal roll in WO127 | Roberts' Horse |
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