The truth behind the legend of the Pied Piper has eluded historians to this very day. It is not without reason that the tale carries the adjunct "Saga". No one can prove what happened so many years ago, but over 16 historians offer us their explanations.
Many interpretations involve the colonisation of Eastern Europe that took place during this period. It could be that the "Children of Hameln" migrated to the East to build new villages, possibly led by a "Locator" or facilitator of migration. In this explanation, the term "Children" is taken to read: denizen.
Later, the story with the children was joined with the rat tale. This relates to Hamelin being a milling town and the more or less successful rat catchers that may have found employ here.