User blog comment:Tholanar/The mightiest god in The Elder Scrolls!/@comment-2040576-20121215150341/@comment-5709731-20130509071324

Lorkhan is, besides Akatosh, the only spirit ever to be credited King of the Gods. As Lorkhanwas a padomaic spirit (Which means, aligned with chaos and having Oblivion as his home plane) and Akatosh was anuic (Aligned with order, stasis and with Aetherius as home plane), it is likely to believe that Lorkhan was the king of the Padomaic ones (Some of which would later become the daedra) and that Akatosh was king of the Anuic ones (All of which would later give up their essences to create Nirn and become the aedra. While Magnus didn't give up his power, he still is an aedra for participating in the event that was the creation).

And when Lorkhan lost the Ehlnofey Wars, his followers (The nordic gods) likely swore their allegiance to their new king. Akatosh.