Lipit-Ishtar (jan 1, 1934 BC – jan 1, 1924 BC)
Description:
 Lipit-Ištar is mostly known due to the Sumerian language hymns that were written in his honor, as well as a legal code written in his name (preceding the famed Code of Hammurabi by about 100 years)—which were used for school instruction for hundreds of years after Lipit-Ištar's death. The annals of Lipit-Ištar's reign recorded that he also repulsed the Amorites. 
Added to timeline:
Date:
jan 1, 1934 BC
jan 1, 1924 BC
 ~ 10 years