These are CARTE DE VISIT that I found on the internet in South Africa. On the back is the name of Conrad Martin Pitel. I assume the second photo might be of his three sons.
British Concentration Camps of the South African War 1900-1902. It seems Conrad Martin Pitel was incarcerated during the war.
My Grandfather with my Son, Martin
Four generations of Pitel's
My Father when he was young
My Mother was and still is a looker
Proud parents with Willem
Now just tell me I wasn't cute!
My days of military training
My Father and Martin
Baby Martin
Baby Vanessa