When the Duke Leto, father of Paul, called himself a chevalier of the Imperium, as his family histories recount, this was not just rodomontade. When the Duke assumed power over Arrakis as total fief, he published the traditional formal announcement: "Our Sublime Padishah Emperor has charged me to take possession of this planet and end all dispute." Hie Duke thought of this as a fatuous legalism, but he published the announcement, and so did Glossu "Beast" Rabban when he took charge in his turn.