I really thought you did it, and killed Harry off. Excellent work! But, the kids, wouldn't they resemble Harry enough for Ron and Luna to figure it out?
Author's response
- No, for several reasons, not the least of being Ron carried 'Harrys' body back to the castle... And the kids favor Hermione.
- Think about that, if you personally carried your friend's body, and several years later a kid that somewhat resembled him showed up, would you suspect he was still alive?