Isabella Elizabeth JONCK married Jacobus Francois PRETORIUS 1911– Pieter Willem PRETORIUS Johanna Dorothea PRETORIUS Martha Johanna PRETORIUS Jacobus Francois PRETORIUS Children of Isabella Elizabeth JONCK and Jacobus Francois PRETORIUS Pieter Willem PRETORIUS Johanna Dorothea PRETORIUS Martha Johanna PRETORIUS Jacobus Francois PRETORIUS