This isn't a chapter, I know you're disappointed but I read a comment that they're confused so I'm here to help:
Victoire, Dominique and Louis are Bill and Fleur's children
Fred and Roxxane are George and Angelia kids
Molly and Lucy are Percy and Andrey's kids
Rose and Hugo are Ron and Hermione's kids
James and Albus and Lily are Harry and Ginny's kids
Draco had married someone named Astoria Greengrass and their child is Scorpius
Teddy is Tonks and Remus child
and Luna had married someone names Rolf Scamander and they had twins named Loran and Lysander
Though I don't know how I'm going to bring in Luna's and Draco's kids yet. The other character's are just OC's. So their back story will continue in the story but these are the next generation of Harry Potter that you should know who's kids are who's. I hope this helps any questions don't be afraid to ask I'm glad to help thanks :)