Psychosomatic

Harry Potter is a child whose parents, lily and James Potter, were murdered October 31st of 1981 in Godrics Hallow, West Country England by monsters Harry surviving miraculously with just a peculiar bolt shaped scar upon his forehead. He was then reluctantly taken in by his aunt petunia and uncle Vernon. After Harry starts seeing the monsters again and other creatures, his relatives called him a freak and dumped him in a psych ward after getting him diagnosed with schizophrenia and psychosis. One night a gift had arrived from a mysterious Sirius Black, who'd died shortly after sending the package from unknown causes. A diary was given to Harry from the man, peculiarly this diary was able to speak back to him, and claims his name is Tom Riddle. Who is this Tom and why is he so persistent in taking to Miss Peregrine's Home for Peculiar Children an orphanage hundreds of miles away on a welsh island?