The main source for the battle is Andrew of Fleury, who probably received his information, which is detailed and generally accurate, during a trip to the Catalonia.
[1] The four Christian counts of the battle were Raymond Borell of Barcelona, Bernard I of Besalú, Wifred II of Cerdagne, and Ermengol I of Urgell.
The German historian of the Crusades Carl Erdmann supposed the leader of the Muslim army to be Abd al-Malik, the son of the recently deceased hajib Almanzor.
Bernard of Besalú he quotes as reasoning that if the saints Peter and Michael and the Virgin Mary each kill 5,000 Muslims, there will be a manageable number left for the soldiers.
According to Andrew, after the battle the Virgin Mary miraculously brought news of the Christian victory to as far away as Monte Sant'Angelo.