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This Boer-War Soldier record for Herbert Dunstenville VAN NIEKERK 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=268120&r=Herbert Dunstenville&s=VAN NIEKERK&ref=