Rise Of Riverthornes Heir (Wbwl)

Harry Potter had his title as heir to the Potter clan taken and given to his younger brother all because his brother was the boy-who-lived or so everyone believes. What really happened that night Voldemort attacked Harry defeated him but his younger brother Alex was declared the savior instead. Though it is Harry who is the true savior he was pushed to the shadows of his brother and forgotten by most.

At age five Harry finds a magical book that is temporarily anchoring someone's soul. Later that day he hear's a certain conversation between Albus Dumbledore and the Potters. Not liking what he hears he runs away. With the help of the goblins he dissapears for few years traveling and learning. Years later it's time for Hogwarts and Harry Potter is not what the Potters or Dumbledore expected. Harry also goes by a completely different name as he can't legally be called Potter he is Hadrian Riverthornes heir/lord of many.

How will Dumbledore handle many plans failing because of Hadrian? How will the wizard world handle not knowing who their savior is? How will Dumbledore handle not being able to control one of the possible profecy child?