Do you know who these people are?

Sander Groen (Facebook):

These wonderfully nostalgic photos, probably taken in the late 1950s/early 1960s, came from film rolls found in two old abandoned cameras in France. The couple in the pictures on the left are presumably French and in their twenties, which would mean they are now in their eighties, and the family in the right-hand pictures are perhaps from Spain, the young parents being in their twenties or thirties and the children about 4 to 8 years old – now in their fifties? These pictures raise all sorts of questions: who are these people, where are they from, were they holidaying and how did they lose their cameras? They might be really anxious to see their photos for the first time after more than half a century. More photos here: http://on.fb.me/YJa8td.