From: Fouriesburg Town
This Prisoner of War record for Jan Georg Siebert Oelrich was transcribed record from various documents held at the National Archives, South Africa, including arrest and shipping information from newspaper sources like De Zuid-Afrikaan.
https://www.gendatabase.com/boer-war-prisoner-record.php?q=7841&r=Jan Georg Siebert&s=Oelrich&ref=
This set of Prisoner of War documents can be accessed online via the FamilySearch.org project by Clicking Here.