Pleasantview/theories

You know how Sunset Valley was the predecessor of Pleasantview? Well anyways I just noticed how the Pleasant Family wasn't depicted in Sims 3 even though they go many generations back. I also noticed that the Pleasant Family has their name in the neighborhood of Pleasantview. Could there be some patch of important history that has to do with the Pleasants with the founding of Pleasantview? Or did the Pleasant clan live in the area before the neighborhood's founding?