No one in the series was named Hugo or Rose
Yes, along with Ron and Hermiones children, and Draco Malfoy's children.
Harry Potter, Ron Weasley and Ginny Weasley.
Never and no reason. (Except for a vision created by Tom Riddle, to torment Ron.)
he yelled at her for going with Victor Krum, because he is the enemy
Yes they do! They have a girl named Rose and a boy named Hugo.
Nobody in the series is named either Rose or Hugo.
Rose and Hugo Weasley weren't named after anybody mentioned in the series.
Yes. In Harry Potter and the Chamber of Secrets - they meet Harry and Ron (and Rons family) whilst they are in Flourish and Blotts buying books for the new school year
Yes, Hermione marries Ron Weasley. Their two children are named Rose and Hugo Weasley.
No-one. They simply pick up names they like, Hugo and Rose.
They are not mentioned in the movie or the book. I know for a fact that they are named after famous Quittich players.
Ron white's dog is named Sluggo.