 William and the count of Barcelona were among the soldiers awaiting the arrival of the Genoese fleet at the mouth of the Ebro on 12 July 1148.According to the Genoese account, the "Ystoria captionis Almarie et Turtuose" of Cafarus, the lords of Barcelona and Montpellier camped atop "Mount Magnara", one of two hills overlooking Tortosa, while the other foreign troops, mostly English, French and Flemish knights who had participated in the siege of Lisbon the year before, camped on the hill called "Romelinus".After the conquest of Tortosa, one of William's younger sons was made co-lord of the city.