Temüjin was born in 1162 into an influential family who were part of a Mongol tribe near Burkhan Khaldun mountain and the Onon and Kherlen Rivers in modern-day Mongolia, not far from the current capital Ulaanbaatar. The Secret History of the Mongols reports that Temüjin was born with a blood clot grasped in his fist, a sign that he was destined to become a great leader. He was the second-oldest son of his father Yesükhei, a minor tribal chief of the Kiyad and an ally of Ong Khan of the Kerait tribe, and the oldest son of his mother Hoelun. According to the Secret History, Temüjin was named after a Tatar chieftain whom his father had just captured. The name also suggests that they may have been descended from a family of blacksmiths.