His titles included: "Mighty King", "King of Isin", "King of Ur", "King of the Land of Sumer and Akkad".[nb 1] The 1st year name recorded on a receipt for flour and dates[i 12] reads: “Year Iddin-Dagān (was) king and (his) daughter Matum-Niatum (“the land which belongs to us”) was taken in marriage by the king of Anshan.”[nb 2][15] Vallat suggests it was to Imazu (son of Kindattu, who was the groom and possibly the king of the region of Shimashki)[i 13] as he was described as the King of Anshan in a seal inscription, although elsewhere unattested. Kindattu had been driven away from the city-state of Ur by Išbi-Erra[i 14] (the founder of the First Dynasty of Isin), however; relations had apparently thawed sufficiently for Tan-Ruhurarter (the 8th king to wed the daughter of Bilalama, the énsí of Eshnunna.)[16]