James Sirius Potter

I named you after my father, James Potter, who died protecting me and his best friend Sirius, the closest I ever had to a father figure at a time when I desperately needed one.

Albus Severus Potter

You were named after two of Hogwarts greatest headmasters:

Albus Dumbledore, who devoted his life to engineering Voldemorts down fall and Severus Snape the bravest man I ever knew.

Lily Luna Potter

I named you after my mother, Lily Evans, who died protecting me and in doing so gave me the power to defeat Voldemort and Luna Lovegood. I like that chick. We went to a party once.