Goede Morgen,
Sorry for not speaking Dutch. This is a challenge as I have searched everything I know and still can't find anything about these people.
On my ancestor's doopregister in 1808 in Den Helder, her parents are listed as Hendrik Antonie Rijstenborg and Maria C. Klembie.
I can find no trace of either of these people. Birth, marriage, death - they don't seem to exist!
I would appreciate any little bit of information about Hendrika and Maria you may find, I have nothing.
Thank you very much
Charlie 
Dat is mijn: http://familypedia.wikia.com/wiki/Hendrika_Antoonica_Rijstenborg_(1808-1878)
Dank U Niepoort, 
I looked at the huwelijksbijlagen for their daughter and sadly it does not say when the parents died.
Hendrik Antonie and Maria C. Klembie were not married as their daughter was born 1808!
The name Klembie also occurs as Klimbie.
Dank U, maybe Hendrik and Maria never got married? Maybe they lived in different areas.
In Amsterdam I found the name Coelembie.
Klembie/Klimbie etc. is not a dutch name
I found this, also in Den Helder. Mietje = Maria
Wilm Scheijdeman
Ged. ± 1767 te Arnhem, ovl. 11 jan 1813 te Helder 04:00, overleden in &39;t huis No. 27. Aangegeven door Jan Gt Brouwer, wonende aan den Helder, van beroep sjouwerman en Mietje Klembie, wonende aan den Helder, van beroep zonder, ongeveer 46 jaar
Mietje Klembie born and living in Rotterdam! But on january 13th living in Den Helder.
Thank you very much! That looks very promising.
Maria C. Klembie is perhaps the same person as Maria Christiaanse Chlimbie
Wow, thank you! I think you've answered the mystery of Maria!
That definitely looks like her. It's the right place, time and name, and explains the "C" on later records. Thank you 
Wat is mis in jullie antwoorden is, dat in de doopakte van Hendrika Antoonica Rijsterborg
van 01-05-1808 te Den Helder staat (helaas niet duidelijk te lezen) dat het kind onecht is ??
Wat is dan de waarde van de hierboven genoemde ? (dit uiteraard m.b.t. Hendrika)
If Hendrika was onecht then I expect her parents never married and maybe lived in different places.
I have searched in Den Helder with "Trijntje/Trijntie Kok" on WieWasWie and found nothing, so it doesn't look like Maria or her parents died there.
Are there any ideas on how to find Maria/Mietje/Maria C(hristiaanse) after 1813, if that is indeed her? I am looking at all the sites I know.
In reference to Hendrik Antonie Rijstenborg, do you think he may be Hendrik Anthonie Rijsterborgh (1765-1843)? It is the only person with a similar name I can find.
In mijn reactie van 12 uur 37 gaf ik al aan dat Hendrik Antonie en Maria NIET gehuwd waren.
In de huwelijksbijlagen staat dat uitdrukkelijk en goed leesbaar vermeld.
I think, the Rijsterborgh you found, could be the right man. Some differences in how a name was written, were still normal in the 19th century.
Thank you. He is the only one I can find. The trouble is, he was married and had children at the time. Maybe it was an affair.
Strangley Rijstenborg doesn't even seem to be a name. The only mention of it is with my Hendrik. Maybe it was just a mistake on the dopenregister and it has been continued to his daughter.
There exist also names like Roestenburg, Rustenburg etc. Where was Hendrik Antonie Rijsterborgh born?