You're very welcome, brigcs. The tree I mentioned is on Ancestry. Most of what I found is available without subscription but a UK sub with either Ancestry or FindMyPast would help you trace the families here. There are some records for South Africa on familysearch - just select "search", then select "records" from the dropdown menu to bring up the world map. Click on Africa , select South Africa to bring up a list of what's available. I don't think a sub with any of the usual subscription sites will help much with searching there. You might like to ask a Moderator to move your post to the South Africa board to see if anyone there can help you , but bear in mind that we cannot discuss living people if you are wanting to move forward , rather than back. If you decide just to post a new topic on the SA board make sure you include a link to this topic to avoid duplication.
Good luck !