Particularly inspiring were the Nestorians' missionary successes among the Mongols and Turks of Central Asia; French historian René Grousset suggests that one of the origins of the story may have come from the Kerait clan, which had thousands of its members converted to Nestorian Christianity shortly after the year 1000.
Particularmente inspirador foi o éxito dos misioneiros nestorianos entre os mongois e os turcos de Asia Central; o historiador francés René Grousset suxire que unha das sementes da que xurdíu a historia talvez vira do clan kerait, miles de cuxos membros convertéranse ao cristianismo nestoriano pouco antes do ano 1000.