From: Zwarshoek
This Prisoner of War record for Hendrik Tjaart Jacobus Van Der Merwe 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=14005&r=Hendrik Tjaart Jacobus&s=Van Der Merwe&ref=
This set of Prisoner of War documents can be accessed online via the FamilySearch.org project by Clicking Here.
