Jannetha Sophia was die dogter van Carel Johannes von Wielligh en Jeanetta Sophia Hendrikse.
Kinders:
i.1. Albertus Jacobus MOSTERT, geb. 30//07/1926, ged. 07/11/1926, Nieuwoudtville
i.2. Jannetha Sophia MOSTERT, geb. 02/01/1929, ged. 07/04/1929, Nieuwoudt.
i.3. Carel van Wielligh MOSTERT, geb. 27/03/1932, ged. 05/06/1932, Marchand, Kenhardt