AN: The date of when Sirius went to Azkaban will probably be wrong, but since I'm lazy I'm just going to change it to serve my own purpose.
*****
"Did you know about this?" Harry demanded of Lupin as the latter sat in the living room.
"Know about what?" Lupin asked, startled.
"This," Harry said, pointing to the birth certificate. "May Lily Black."
Lupin, now alarmed, grabbed the paper and stared at it. "Impossible!" he sputtered. "The child-she-it-no! No, the child died before it was born!"
"Not according to that," Harry challenged. "Apparently she's a perfectly healthy thirteen-year-old girl living in Ireland with foster parents."
Remus Lupin's eyes grew wider than Harry had ever seen them. "My god," he whispered. "This….well, this changes things."
"It does?" Harry asked eagerly.
"Drastically."
