I'm looking for a Harry Potter fanfiction that I read a few years ago in which it turns out that Harry Potter isn't actually Harry Potter, but a child who was stolen from Diagon Alley to replace Harry Potter.
In this fanfiction, Vernon Dursley killed the real Harry Potter, and Dumbledore has been stealing, memory-replacing, and disguising wizarding children to replace Harry Potter as Vernon keeps killing the replacements. The current Harry Potter has all these memories from the past replacements, and some of the actions don't match up, which is how they find out that there are more dead little boys who had been stolen to replace Harry Potter. I think Harry Potter may have actually been a Malfoy/some other dark pureblood in this one, and had been under a glamour (to avoid being attacked due to his parentage) when he was stolen from Diagon Alley.
Could anyone help me find this story?