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An-Nasir Dawud was the son of
An-Nasir, however, realizing the deception in time, retreated to his capital of Damascus, where he was besieged by the combined armies of his uncle late in 1228. The siege until June 1229, when Al-Ashraf finally captured Damascus, and became ruler, although acknowledging the overlordship of his older brother. An-Nasir was compensated with the lordship of Kerak in the Transjordan region.
An-Nasir Dawud was to rule from Kerak for the next thirty years. In 1239 he returned briefly to prominence when his cousin
In November 1239,
In April 1240, An-Nasir, quarreling with Al-Adil, released Ayyub and allied with him against the Egyptians, in return for a promise that Ayyub would reinstall him in Damascus. Al-Adil was assassinated by his own troops, and Ayyub and An-Nasir entered Cairo in triumph in June. When An-Nasir returned to Kerak the next month, however, he found himself under attack from the crusaders, who had entered into alliance with his enemy,
In the Spring of 1241, Ayyub, having signed a truce with the Crusaders, launched a campaign to reconquer Syria. His army met the troops of An-Nasir in battle west of Jerusalem, and were defeated. Now, however, An-Nasir changed sides again, submitting to Ayyub. For the next two years, An-Nasir was faced with constant fighting against the Franks, and occasionally with Ismail as well, and received little in the way of concrete aid from Ayyub, so he changed sides once again, going over to his uncle Ismail's side in 1243. The arrival of a force of
When Ayyub sent an army to recover Damascus and Palestine in 1245, An-Nasir was deprived of his lands west of the Jordan, but was allowed to retire back to his original lands beyond the Jordan. He continued to rule Kerak until 1248, when he was finally deposed. He died some years later, in 1256.