There is a conflict in data relating to this person. In various sites Fredrik is married to Catharine Susanna Gerendina Collins and had children with her. In other sites Johan Fredrik is married to "Marjory" Daw and had a different family attributed to this union.
Adelaide "Marjory" Daw was married to Johan Gerhardus Wilhelm Luyt on November 13, 1882 and they had 9 or 10 children with names different names to Johan Fredrik and Marjory Daw's children, and who were bought after Johan Fredrik had died in 1875.
I suspect that another Johan Fredrik Luyt is involved here, there are so many, or that maybe it is Johan Coenraad Fredrik Luyt?
I look forward to a discussion to solve this anomaly.
Kind regards
Jan Neelmeyer .