Suliman, having thus made himself secure, attacked his brother Isa in 1405, defeated and killed him.[124] Another brother, Mousa, in the following year, attacked the combined troops of Suliman and Manuel in Thrace, but the Serbians and Bulgarians deserted the younger brother, and thereupon Suliman occupied Adrianople. Manuel consented to give his granddaughter in marriage to Suliman, who in return gave up not merely Salonica but many seaports in Asia Minor: a gift which was rather in the nature of a promise than a delivery, since they were not in his possession. Unhappily, Suliman, like many of his race, had alternate fits of great energy and great lethargy, and was given over to drunkenness and to debauchery. This caused disaffection among the Turks; and Mousa, taking advantage of it, led an army in 1409, composed of Turks and Wallachs, against him. The Janissaries, who were dissatisfied with the lack of energy displayed by their sultan, deserted and went over to the side of Mousa. Suliman fled with the intention of escaping to Constantinople, but was captured while sleeping off a drinking bout and killed. Then Mousa determined to attack Manuel, who had been faithful to his alliance with Suliman. He denounced him as the cause of the fall of Bajazed and set himself to arouse all the religious fanaticism possible against the Christian population under the emperor’s rule. According to Ducas, Mousa put forward the statements that it was the emperor who had invited Timour and his hordes, that his own brother Suliman had been punished by Allah because he had become a giaour, and that he, Mousa, had been entrusted with the sword of Mahomet in order to overthrow the infidel. He therefore called upon the faithful to go with him to recapture Salonica and the other Greek cities which had belonged to his father, and to change their churches into mosques for the worship of God and Mahomet.[125] In 1412, he devastated Serbia for having supported his brother, and this in as brutal a manner as Timour had devastated the cities and countries in Asia Minor. Then he attacked Salonica. Orchan, the son of Suliman, aided the Christians in the defence of the city, which, however, was forced to surrender, and Orchan was blinded by his uncle.