It is either short for 'Robert' or misspelled 'RAB' referring Regulus A Black.
Robert Knox, 18, who acted alongside Daniel Radcliffe in Harry Potter and the Half-Blood Prince
Cedric Diggory in the Harry Potter movies is played by Robert Pattinson, that is correct.
Yes Ron's pet is in Harry Potter 1
Not exactly. Rob Knox played Marcus Belby, a member of "The Slug Club." Harry Potter and the Half-Blood Prince was dedicated to him.
Rob Knox is dead.
Cedric D. in GOF
Sadly, only one.
* Twilight * Harry Potter * New Moon * Breaking Dawn * Eclipse
Rob was a model when he was 6 and he was in a few movies before Harry Potter :D
He Plays Marcus Belby In The Half Blood Prince (He Is A Ravenclaw Student)
Rob Pattinson was Cedric Diggory in Harry Potter and the Goblet of Fire
Rob Knox was an English actor that starred in the film Harry Potter and the Half-Blood Prince which was released in 2009. Rob Knox passed away at the age of 18 in 2008.