This picture of an old photo is from back in the days when Argentina had belonged to the six richest nations on earth. In those days Buenos Aires literally worked like a sponge, it absorbed people from all over the world. They came mostly for work and in search of a better future. This old era is long gone, and Argentina now finds itself in a totally different situation. I don't know anything about the name or ancestry of the old family in the photo. However, I would say they belonged to the upper ten thousand of the Argentine society of the late 19th century.
If anyone knows more about this family, who they are and what they did, please post a comment. I'm curious.