- Yes, date unknown| 1. | Willem Johannes Lourens Jansen and died. Willem married Sophia Elizabetha Gertruida van Dyk on 9 Jun 1879 in Somerset Oos, Kaap, Suid-Afrika. Sophia (daughter of Francois Johannes van Dyk and Petronella Hendrina Potgieter) was born on 20 Mar 1859; was christened on 10 Apr 1859 in Smithfield, Vrystaat, Suid-Afrika; and died. [Group Sheet] [Family Chart]
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| 2. | Maria Cornelia van Dyk  (1.Willem1) was born on 22 Mar 1878; was christened on 8 Jun 1879 in Somerset Oos, Kaap, Suid-Afrika; and died. |
