The Simon Lodewyk Prinsloo that I added was my grandfather, who was born in June 1896 and died in July 1983.
The children mentioned above are my father and his siblings. The place of death id that of my grandfather, but the date of birth and date of death seem to be that of my great grandfather's uncle, who had the same name.
My great grandfather also had a brother with the same name and it appears as if some of his information may be mixed in here as well.
The wives appear to be those of each of the three men.
This looks like a merge gone bad...