Valencia was in the power of the Moors for more than five centuries. The Cid (Rodrigo Diaz de Vivar) reconquered it for the first time on 15 June, 1094, turned nine mosques into churches, and installed as bishop the French monk Jérôme. On the death of the Cid (July, 1099), his wife, Doña Ximena, retained power for two years, when Valencia was beseiged by the Almoravids; although the Emperor Alfonso drove them from the city, he was not strong enough to hold it. The Christians set fire to it, abandoned it, and the Almoravid Masdali took possession of it on 5 May, 1109. Jaime the Conqueror, with an army composed of French, English, Germans, and Italians, laid siege to Valencia in 1238, and on 28 September of that year forced a surrender. 50,000 Moors left the city and on 9 October the king, followed by his retinue and army, took possession. The principal mosque was purified, Mass was celebrated, and the "Te Deum" sung.