Warad-Sin in Wikipedia
Warad-Sin ruled the ancient Near East city-state of Larsa from 1770 BC to 1758 BC. There are indications that his father Kudur-Mabuk was co-regent or at very least the power behind the throne. His sister En-ane-du was high priestess of the moon god in Ur.   
Annals survive for his complete 12-year reign. He recorded that in his second year as king, he destroyed the walls of Kazallu, and defeated the army of Mutibal that had occupied Larsa.