Irkab-Damu was the ruler of Ebla . He is the second of the kings to be found in the great archive from the 3rd millennium BC. Are attested. His name appears there mainly in administrative texts. It is also known that he married his daughter to the unknown ruler of Emar . Arrukum served in his final years in office . Enna-Dagan sent him a letter confirming his sovereignty over Ebla.