Among those who assisted the Count of Provence against the Saracens was one Bertrand de Balbs, and in reward for his services he was given in fief the barony of Beuil, a vast territory stretching from the Estéron to the Alps, and comprising twenty-two towns and townlets. His descendants kept the barony till 1315, when William de Balbs made himself so odious to his vassals by his tyranny that they murdered him. A brother of the Grimaldi of Monaco had married the only daughter of William de Balbs, and as there was no son the fief passed to him, and he became the founder of the family of Grimaldi of Beuil. The barony remained in the Grimaldi family till 1621, when it was united to the county of Nice. They ran, however, a chance of losing it in 1508. Towards the close of 1507, George Grimaldi, Baron of Beuil, his son John, Augustine Grimaldi, Bishop of Grasse, and Nicolas Grimaldi, seigneur of Antibes, formed a plot to deliver over the county of Nice to Louis XII. The Duke of Savoy was warned, and he summoned George and his son to appear before him. They replied with insolence and defied him, relying on French support. But at that moment Louis XII. and the Duke of Savoy had arranged their little quarrel, and when John Grimaldi asked for aid from the Governor of Provence, he was refused. Meantime the garrison of Nice marched against Beuil. The castle, built on a height and surrounded by strong walls, could have stood a long siege, when a tragic event put an end to the struggle. The Baron de Beuil was murdered by his valet, who cut his throat whilst shaving him. The Duke of Savoy outlawed John, the son, and gave the barony to Honoré Grimaldi, brother of George, who had steadily refused to be drawn into the conspiracy. But to return to Nice. In 1229 a party in the town revolted against the Count of Provence, and expelled those who were loyal to him. Thereupon Romeo de Villeneuve marched on Nice, took the town, and set to work to strengthen the fortifications of the castle, which in future would control it. At that time the castle consisted of a donjon, with an enclosure that had four turrets at the angles. Outside this Romeo built a strong wall that enclosed within the area the cathedral and the houses of the nobility; he cut deep fosses through the rock, and furnished the gates with drawbridges. Later, after the invention of powder, the fortress was further transformed in 1338. After the death of Joanna I. of Naples, Nice took the side of Charles of Durazzo, and in 1388 was besieged by Louis II. of Anjou. The Niçois, unable without help to hold out against him, offered the town to Amadeus, Duke of Savoy, and he entered and took possession.