The weasley's have seven children ... though they should have eight. When ron was born another was born with him. A little girl named Olivia who was so small, and frail, and breakable that they gave her up t a family that could pay for the medical attention that she would need. What they didn't expect was that someday it would come back to haunt them... because she became best friends with Ron, Harry, and Hermione and ended up falling in love with Draco Malfoy