Aubrey's Eberron Campaign
Lost Quori scientist and philosopher
In the book of the history of the Kalashtar, Goshasanan is mentioned as being a philosopher and scientist. His particular field of study was the regular apocalypse of Dal Quor, and his ideas were sufficiently revolutionary to lead to his persecution by the Dreaming Dark. What those ideas were is not mentioned.
Currently thought to be possibly merged with an experimental warforged named 773 who seems to access the memories of Goshasanan in mad ramblings.