There seems no evidence on her DN https://www.familysearch.org/ark:/61903/3:1:3Q9M-C91W-5S1Y-J?i=791&... that Catharina Susanna de Villiers married and had children with Henry Allan Fagan
Catharina Susanna Fagan is a different person. See her DN: https://www.familysearch.org/ark:/61903/3:1:3Q9M-C91Q-39CL-2?i=234&.... Unlinking