User blog comment:Jazon Naparleon/Questions of Romans and Mongols/@comment-4727448-20120815054104/@comment-4727448-20120816045054

Ogadai was his third born son.

And like I said, many presumed him dead, and this reportedly furthered fueled Temujin's "grr I kill yousa!" attitude. His absolute death would most likely push Temujin even farther off the deep side.