Indeed food for thought David
You could very well be spot on. Two things however - firstly the article infers that the Boers were (all) captured and taken prisoner. My man was a "bitter einder" - one of those who fought until after peace was declared before laying down his arms.
Secondly, you might have a point with the date - a bit of context which you might already be au fait with - the award of medals to Boer combatants was only sanctioned in 1920 whereafter those still alive could apply for their medal (Vorm

and their Wound Stripe/Ribbon (Lint voor Wonden) after that date. The first medals issued were in 1921 onwards so, yes, memories fade after the elapse of almost 20 years and Oberholster could have the day, month or even year wrong.
he served with Kommandant H Vermaas. Veld Kornet Visser and Kommandant Van Zijl (Van Zyl) so I will have to track those fellows' movements and those of the Lichtenburg Commando to see for any similarities to the what has been suggested.
Regards
Rory