Bezuidenhout/ de Bruin ancestry

Hi , how do I go about finding more info on my ancestors...specifically from my mother's side. I found the Bezuidenhout discussion and now know where we came from but to get which son is the link is a task I do not know how to sort. The details I have is starting with me:
Madelien Nicky Liebenberg (Odendaal)
Mother: Cornelia Elizabeth Odendaal (Bezuidenhout) 16/09/1928 - 24/12/2009
Grand father: P J Bezuidenhout 28/06/1896 - 09/02/1974
Grand mother: Wilhelmina Maria Bezuidenhout (De Bruin) 27/02/1898 - 14/06/1952

Great grand father and mother on both sides
JJ Bezuidenhout married to a DM Bezuidenhout
and
AJ de Bruin married to a WM de Bruin

I would appreciate it you can point me in the right direction.

Kind regards
Madelien