Looking for Eduard Wilhelm Leopoldt van Hansen (c1815-)

[Karytay]

Can someone help me please with Eduard Wilhelm Leopoldt van Hansen (c1815-). I have looked on Family Search and found two sons for this man, son Stephanus Andries Van Hansen b. abt 1844 and Edward Wilhelm Leopolt van Hansen b. 11 Oct 1845 Winburg OFS.
Wife of  Eduard Wilhelm Leopoldt van Hansen (c1815-) Susanna Jacomina Du Plooy or Susanna Petronella du Plooy. On the son Edward/ Eduard's baptism record it has the mother as Susanna Jacomina - Baptism link - Baptism - https://www.familysearch.org/ark:/61903/3:1:3Q9M-C953-QNTV?i=121&cc=1910846.
I have looked on family search for death notices and marriages for these people among the Cape records and found nothing. Except for the son Stephanus Andries Van Hansen b. abt 1844 whose marriage I found - https://familysearch.org/ark:/61903/1:1:Q23Q-F7R6

There are a lot of van Hansen's starting in the 1900's till present day. But I cannot find any van Hansen's in the 1800's
Any advise , please, were to look now?
these are the places I have looked- Cape civil marriages, cape N G records for marriages and baptisms, Cape Civil deaths, Transvaal civil marriages and deaths, OFS baptism records and marriage.
Thanks 

[hanes teulu]

I had a quick peep at
http://eggsa.org/1820-settlers/index.php/records-of-the-cape-colony?tmpl=component

but no success. Perhaps a bit early?

I assume you checked the National Records of South Africa (NASA)?

[Karytay]

Hi, Yes . The archives have only the van Hansen from the early 1900's. I have also looked under just Hansen, Hanson. But the name Eduard Wilhelm Leopoldt van Hansen does not come up. On Geni the profiles also have scares info.