Day 23, ESOInktober theme - Volendrung!
It is known that the hammer was originally created by the Dwemer of the Rourken clan, and when the clan took to travel in search of a new residence - its leader simply threw the hammer, and according to legend, it landed on the territory of Volenfell, where the clan settled. The Dwemer that creates the hammer and the leader who throws it is in the very top left corner. These are the Dwemer, who just arrived in the Volenfell desert - below, in the center.
The hammer is known to be associated with Malacath, the keeper of the Sworn Oath, and the Bloody Curse. Although he himself did not create a hammer - but it is he who gives it as a reward in the quests for TES: IV and V.
Sheogorath associates with the Hammer during the ESO, because after the hammer was somehow split, it falls into his hands, and without thinking twice, he decides to give it into the hands of people fighting in the Alliance War.