Petrus Willem Johannes Lodewikus was die seun van Andries Albertus Nel en Sara Petronella Nel.
Volgens die transkripsie van hulle ma se sterfkennis verskil die datums van geboorte:
Heirs to the estate - MOOC8/42.29
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Cornelia Johana Nel born 10 Jan:y 1816
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Adriaan Albertus Nel born 19 December 1818
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Pieter Willem Lodewyk Johannes 21 December 1820
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Andries Albertus 15 November 1825
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