Yes, they are considered half-blood because their father was a half-blood. Many people try to get into the quarters and such but J.K Rowling has never explained how this works.
Ginny Weasley.
No, he has three children with his wife Ginny.
It is unknown who will play James, Albus and Lily.
snape. his mothers maiden name was prince and he is halfblood. hence the halfblood prince.
yes
Yes, along with Ron and Hermiones children, and Draco Malfoy's children.
The Harry Potter series of books were created for people of all ages to read.
Harry Potter was a wizard
Ginny and Harry have three children together. James, Albus Severus, and Lily. We do not know who named the children. Most people say Harry named them however I think they both did.
There is no such person.
No
not in the film, no