What is "ilu-mer"

Ilu-Mer was the twenty-first Assyrian monarch of the Early Period of Aššūrāyu (Assyria) according to the Assyrian King List (AKL). Ilu-Mer is listed within a section of the AKL as the fifth out of the ten "kings whose fathers are known". This section (which in contrast to the rest of the list) had been written in reverse order—beginning with Aminu and ending with Apiashal “altogether ten kings who are ancestors”—and has often been interpreted as the list of ancestors of the Amorite Šamši-Adad I ( fl. c. 1809 BCE) who had conquered the city-state of Aššur. The AKL also states that Ilu-Mer was the son and successor of Hayani. Additionally, the AKL states that Ilu-Mer had been both the predecessor and father of Yakmesi.