Hadrian Vivian Potter, the brother to the Boy-Who-Lived. As Harry is neglected in favor of his 3 years younger brother, he does the only thing that doesn't abandon him, he reads and as he reads he finds out the secret of the Peverells, the Demons of Ice
This story is just the drafts and I am writing just as my thoughts come and when I am done I will do the real story with a lot less plot holes and more details.