There is a Tree on Ancestry.Com,Tree owner Otto Diedericks,you can
contact him,he has all the history of the family you are looking for.
And it is well documented.
Tree is Jacobus Johannes Diederiks birth May 25 1836, KAAPKOLONIE
Suid Africa, died Oct 25 1894,Boshof,OVS,Suid Africa.
Good hunting.