www.swcomics.com Google all of this crap, you can find canon sources that Xendor was the first, that the first great schism was 25k years before the empire, and Simus was the DLOTS before Ragnos, but he was the greatest Alchemist during his time, not the greatest ever...
New Essential Chronology, page 84
....The Essential Chronology? Dan Wallace is a writer at LFL?
http://www.starwars.com/eu/lit/ref/f20051025/index.html