| Jansen | J I | | Corporal | CGHGSM (1) Transkei
Source: Roll of the CGHGSM | Cape Town Volunteer Engineers |
| Jansen | J P | | | Source: WO100/279 | Cape Government Railways |
| Jansen | J T | | Lieutenant | Demise: Killed in action 15 Jun 1901
Place: Plaat Drift Nr
Source: In Memoriam by S Watt | Warren's Mounted Infantry |
| Jansen | J T | | Lieutenant | Killed in action. Near Plaat Drift, 16 June 1901
Source: South African Field Force Casualty Roll | Warren's Mounted Infantry |
| Jansen | Jacobus | | | Prisoner number: 7146
Captured: Suiverfontein 23 May 1900
Sent to: Bermuda
Age: 18
Address: Ventersfontein
Source: Anglo Boer War Museum 2016 | Boer Forces |
| Jansen | Jan | | | Source: WO100/280 | Aberdeen TG |
| Jansen | Jan Hendrik | | | Prisoner number: 14510
Captured: Trompsburg 31 Oct 1900
Sent to: Unknown
Age: 21
Address: Trompsburg
Source: Anglo Boer War Museum 2016 | Boer Forces |
| Jansen | Jasper Benjamin | 35206 | Private | Served 13 Aug 01 to 06 Jun 02.
Source: Nominal roll in WO127 | Cape Colony Cyclist Corps |
| Jansen | Johan T | | Trooper | BSACM Mashonaland 1897 (0).
Source: BSACM rolls | British South Africa Police |
| Jansen | Johan Thomas | | Lieutenant | Source: Nominal roll in WO127 | Warren's Mounted Infantry |
| Jansen | Johann Thomas | 776 | Private | QSA known to exist. QSA (1)
Source: List of QSAs with the clasp Defence of Kimberley | Cape Police |
| Jansen | Johannes Bornman | | | Prisoner number: 23778
Captured: Fonteintjes 13 Oct 1901
Sent to: India
Age: 52
Address: Rietpoort
Source: Anglo Boer War Museum 2016 | Boer Forces |
| Jansen | Johannes Gerhardus Stefanus | | | Prisoner number: 24798
Captured: Melkhoutfontein 10 Nov 1901
Sent to: Bermuda
Age: 30
Address: Leeuwfontein
Source: Anglo Boer War Museum 2016 | Boer Forces |
| Jansen | Johannes Hendrikus Nicholas | | | Prisoner number: 25848
Captured: Bushmansberg 23 Nov 1901
Sent to: Bermuda, Hawkins Island
Age: 16
Address: Ventersfontein
Source: Anglo Boer War Museum 2016 | Boer Forces |
| Jansen | Johannes Hermanus | | | Prisoner number: 27071
Captured: Klipkop 21 Dec 1901
Sent to: St. Helena
Age: 69
Address: Klipkop
Source: Anglo Boer War Museum 2016 | Boer Forces |
|
|
