Led by their chiefs Nomenoë and Erispoë, who defeated the king at the Battle of Ballon (845) and the Battle of Jengland (851), the Bretons were successful in obtaining a de facto independence.
Dirixidos por Nominoe e Erispoe, que derrotaron a Carlos na batalla de Ballon (845) e na batalla de Jengland (851), os bretóns acadaron unha independencia de facto.