In terms of class mobility, Scandinavian countries are, from my understanding, much more equitable than my own native America (which even pales now compared to Britain apparently). It's kind of a sad state. However, to what degree class mobility has to do with merely finances and to what degree it has to do with social strata is another matter. Growing up in the United States, I do find it strange that one would dismiss marriage candidates based solely on the fact that they aren't nobility. And yet, when I think a bit more deeply about it, we aren't immune to such distinctions. Just the other day, someone described a family as "redneck," though the person they were talking of supposedly transcended the family status. Maybe we are still more inclined to judge on individual merit.
Anyway, "The Porter's Son" is about such distinctions--two children that grow up together, one as a janitor's son, the other as the daughter of a general who employs the janitor. Despite the fact that the janitor's son goes on to serve in the king's cabinet and is rich and talented to boot, nothing seems to be able to win him approval for the daughter's hand. He is, in the end, not of noble class. One gets the feeling, from many of Andersen's tales, that Andersen did not approve of such distinctions. Read the tale here.