There are 2 "extra Children" for Daniel and Petronella - Barent and Pieternella
and
Petronella "Pieternella" Zaayman, b5c1
...who are not included in SAG v17 - there are no dates or sources added to the profiles.
Pieter Zaaijman and Anna Maria Coopman had a daughter Petronella b 1712 (matches some of the MH Matches Birth: July 18 1712 - Stellenbosch, Western Cape, South Africa, Death: 1775 - Cape Province, South Africa) and a son Barent b 1726 - (MyHistory match has Barent Birth: 1695 - Mauritius Death: Kaap de Goede Hoop, Suid-Afrika)
This might be a case of these profiles being added in the wrong place?
See Richard Ball's pages http://www.ballfamilyrecords.co.uk/bosmandevriesbuys/I057.html and http://www.ballfamilyrecords.co.uk/bosmandevriesbuys/I058.html
Charl George Eysen?
Bartholomeus Zaaijman died 1765
born at the Cape 18
died 25 September 1765, Stellenbosch 19
Notes: It seems likely that he was a son of Pieter Zaaijman and
Anna Maria Coopman. No baptism exists, date of birth
unknown. The only one of his children to have Zaaijman
baptismal witnesses was Pieter Daniel, 1748, whose
witnesses were Daniel Saijman and Pieternella Saijman,
presumably Bartholomeus's elder sister and brother.
married 8 October 1741 Stellenbosch 20nbosch