Marius Borg Høiby will serve four years in prison after being found guilty Monday of two charges of rape and assault and abuse in a close relationship. Marius Borg Høiby , the eldest son of Norway’s Crown Princess Mette-Marit, was sentenced to four years in prison Monday after being convicted of rape. He was found guilty of two of the four rape charges he was facing and acquitted of the other two. He was also convicted of assault and abuse in a close relationship. In addition to the prison