Callaghan-South Africa- photo restoration help

[JustinVieira]

I hope this message finds you well
I have not posted in years, life somehow has a way of getting way with me.

I was hoping to please ask for assistance with restoration of a few photographs as well as a possible dating.

Any help would be greatly appreciated. 
These photo are all from South Africa

[JustinVieira]

This additional photo for restoration is quite a challenge, it is most likely my great-great-grandmother at her wedding (Michelson, taken in South Africa). I am unsure if the photo is so damaged as my great-great-grandfather abandoned her.
It was found in a box I inherited with all the other Michelson photo's of her.

Not sure if this one can be saved, but even if can get a clear look at her hands as we still have her wedding ring in the family

[JustinVieira]

Sorry for all the posts - last but not least is a request for help with an approximate date please.

This photo has been in my family for year - definitely from my Callaghan side but who they are is a mystery.

Any help with the possible date when it was taken would be so helpful

[Handypandy]

Sid the soldier:

[Handypandy]

Mabel, midwife:

[loord74]

first one

[loord74]

2nd one

[loord74]

3d one

[loord74]

4th one