Magrathar was a Northron warlord who conquered a fair amount of territory in northwest Jossia, including the village of Aeth. He took most of that village as slaves and would have advanced further had it not been for the intervention of Surm Ulrich, Mõrvar Ulrich, Savaric, and Rilka.

He partnered with the witch Zavara to take these lands. Both are now dead.