Atz Yuminor was a heroic wizard who lived during the Age of Arcanum.[1] In his lifetime, he assisted in killing the crazed wizard Clemain Astural and took with him many of Astural's scrolls, which were brought back to his house in the Dividing Plains.[2] He is the namesake of Westruun's Yuminor Observatory and the Scions of Yuminor, which is funded by the headmistress of the Westhall Academy, Yuminor's descendant Estella Ladimar.[1]