The couple are (I suspect) Jacobus Daniel Möller and Catharina Maria Alberta Smit. The older seated woman is Maryna Adriana Loots; the girl next to her: Maryna Adriana Smit (Maree, Bekker); the girl standing behind her Maria Smit (Don't know whom she married) and I have no idea who the guy is.

Suspect he might be Cornelius Johannes, the brother of MTR. To the right of the bridegroom they could be any of the following:

David Hendrik Möller
Catharina Johanna Möller
Phillipus P.W. Möller
Margaretha Möller
Paulus Stphanus Möller

If that is the father sitting in the front, he must be Charel Abraham Möller born in 1820, but then Charel Abraham died in 1895 and my gran was married in 1903. So this man must be an older brother: There were 12 children!!!!

Hendrik Francois
Gideon Stefanus Retief
Charel Abraham (the son)
Paulus Stefanus
Pieter Johannes
Dawid Hendrik