StampStudy, I thought it might have been Claridge too, but I couldn't find any information to indicate there was ever a post office there. If you use Google Earth, Claridge seems to be a farm or a hamlet - not even a village. Certainly, there is no post office there now. However, there must have been one there in the past. Perhaps the location was more important a few decades ago.
This is the best map of the locality I could find online:

As far as Village of Happiness is concerned, I think you have to be correct there. Like Claridge, it's also in KwazuluNatal. It doesn't have a post office now, but could well have done (must have done!) in the past.
Thanks so much for the input!