User blog comment:Jimeee/Elder Scrolls Online: Introduction to the Lore/@comment-4976111-20120826221339/@comment-4553238-20120826224814

because he was the first to study necromancy and introduce it to tamriel, explained on his page and vanus 'a link is on mannimarcos page'

http://elderscrolls.wikia.com/wiki/Mannimarco_(Oblivion)#History