Mind-Benders of Christian History
Francis of Assisi and Genghis Khan were alive at the same time
While Francis of Assisi was founding his order in Italy, Genghis Khan was building the largest contiguous land empire in history far to the east. Their lifetimes overlapped for decades, and they died within a year of each other.
How we know
Francis of Assisi 1181-1226; Genghis Khan c.1162-1227. Overlap c.1181-1226 (~45 years); deaths one year apart (Wikipedia; graph Author francis-of-assisi 1181-1226).
One of many fact-checked wonders across eight traditions at The Spring of Wisdom.