Baptismal entry here:
"South Africa, Free State Dutch Reformed Church Records, 1848-1956," database with images, FamilySearch (https://familysearch.org/ark:/61903/3:1:3Q9M-C953-QJ9F?cc=1910846&a... : 4 November 2016), Free State > Winburg > Christenings 1842-1871 > image 64 of 400; Dutch Reformed Church Synod Centre, Bloemfontein.
18th May 1844 Aan Riet River (WInburg) Anna Maria Helena van Niekerk, daugther of Johannes Hendrik van Niekerk and Johanna Jacoba van Niekerk, witnesses Pieter Megiel van Niekerk, Anna Catarina Vermeulen, Giliam Megiel van Niekerk, Anna Catarina Spruit.