Here s somme links maybe usefull mate:
http://members.tripod.com/~whitebard/terms.htm
http://www.metmuseum.org/toah/ht/07/eaj/ht07eaj.htm
http://en.wikipedia.org/wiki/Mongols...e_Genghis_Khan this one is interesting its got enough links.
http://en.wikipedia.org/wiki/Khagan
http://en.wikipedia.org/wiki/List_of_Mongol_Khans

if find more ill place them mate