 However, a revolt soon broke out in Catalonia, led by the viscount of Cardona and abetted by Roger-Bernard III of Foix, Arnold Roger I of Pallars Sobirà, and Ermengol X of Urgell.The rebels had developed a hatred for Peter as a result of the severity of his dealings with them during the reign of his father.Now they opposed him for not summoning the Catalan Courts, and confirming its privileges after his ascension to the throne.