Greetings,
I work for Geni and we were contacted by a family member who's NOT on Geni, with the following information that you may want to add:
Hendrik Gideon was married in 1913 in Noorder-Paarl to Anna Jacoba Margaretha (Annie) Malherbe, eldest daughter of GW vdl Malherbe - a son of Gideon Jozue Malherbe of GRA fame. I think Annie was born in about 1882. Her father died in 1908 and her grandfather died in 1921.
Kind regards,
Mike at Geni