 Upon assuming the throne, however, Henry II refused to honour his promise and instead supported the rights of the Bavarians to elect their own duke.With Henry II's support, Count Henry I of Luxembourg became the Duke of Bavaria as Henry V. Betrayed by the King, Margrave Henry allied with Duke Bolesław I of Poland against him.However, his rebellion was soon quashed and the Nordgauian Margrave was deposed in 1004.