Harry: No
Ron: Yea. You are Luna's cousin.
Hermione: No
Mattheo: No
Oliver: Yes you are Ron's twin.
Neville: No
Fred: You are Nevilles younger sister
George: No
Draco: You are Bellatrix's daughter.
Cedric: No
Tom: You are Snape's daughter
Luna: No
Ginny: You are Hagrid's daughter