Which is Agnita Maria Maria Maritz. van Niekerk. van der Merwe 's husband?
Izak Abraham van Niekerk, b3c6d4e7 09 February 1816
Somerset East, Eastern Cape, South Africa - 17 November 1887 (71), Vierfontein, Ladybrand, Free State, South Africa
or
Izak Abraham van Niekerk 24 November 1810 - 1846 (35-36)