Wikipedia
Chilaun
Chilaun was a general in the Mongol Empire, known as one of Genghis Khan's four valiant warriors. His relatives, specifically his father Sorqan-Shira, helped young Genghis escape from captivity at the hands of the Tayichiuds. His descendants include Chupan.
His name "Chuluun" means "rock/rocky" in the Mongolian language.