Alternate Universe. Lily Evans has a twin brother, Liam. He isn't as brave as Lily, nor does he really stand out. However, when the Dark Lord is after your family, he will doing anything to protect them. That is in the future, for now he is only 11 and about to embark on his biggest adventure - Hogwarts School of Witchcraft and Wizardry. (Summary sounds lame, I may change it later)

What if Harry had an older brother who escaped the destruction of that fateful Halloween night? Mostly cannon, OOC Snape. AU.