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This Boer-War Soldier record for Pietrus VON-DE-MERVE was transcribed record from various documents held at the National Archives, South Africa. Data contained in this set is known as "The Soldiers of the Queen".
https://www.gendatabase.com/boer-war-soldiers-record.php?q=289257&r=Pietrus&s=VON-DE-MERVE&ref=