No, there are no characters in the series with the name Rose or Hugo, although it is believed Rose may be in honour of Lily Evans (Harry's mother).
Rose and Hugo Weasley weren't named after anybody mentioned in the series.
No, none of the Weasley children killed anybody. Augustus Rockwood, the person who killed Fred, was defeated by Aberforth Dumbledore.
Hermione Granger has never killed anybody.
Arthur Weasley didn't kill anybody throughout the series. His wife, Molly Weasley, killed Bellatrix Lestrange.
Most likely at least one death eater in the Battle of Hogwarts
No, he has never killed anybody.
Arthur Weasley didn't kill anybody throughout the series. His wife, Molly Weasley, killed Bellatrix Lestrange.
Hermione was never based on anybody, although J.K. Rowling has stated that Hermione is similar to herself when she was younger as she was seen as the swotty-know-it-all.
No, he was killed in the final battle at Hogwarts.
Hermione never told anybody, that she loves Ron, but she was jealous of Lavender Brown, bacause Ron was going out with her and kissing her.
NO -- Of course they can, anybody can abuse anybody.
Fred Weasley, Remus Lupin, Tonks, Voldemort, Bellatrix, and more