Joost le Clercq, a4 - Alternative Data After Merges

Again both can be correct but Dr David de Klerk in his book gives it as de Klerk
Limare Zoe de Klerk could you please help here or intervene.
Thank you.
Judi

by sy doop was van DE CLERCK, Kaapse dokumente DE CLERCQ,
in databasis DE KLERK ! Voornaam ook as Joos by doop.
David

=by sy doop was van DE CLERCK, Kaapse dokumente DE CLERCQ,=
Watter Kaapse dokumente?

by die doop van sy seun Barend op Stellenbosch!
D

Dankie Limare.