Wikipedia
Belgutei
Belgutei was the son of Yesugei and half-brother to Genghis Khan. He also became general to Genghis Khan. Belgutei was considered a wise counselor and skilled diplomat, and was often used as a messenger by Genghis Khan. With Genghis Khan's blessing, Belgutei killed the champion wrestler of the Mongols, Buri Boko, by breaking his neck during a wrestling match. This was revenge for an earlier incident when Buri Boko had fought with Belgutei and slashed him with a sword. According to legend, Belgutei lived to an unusually old age. Rashid ad-Din claims he died at the age of 110, while the Yuanshi reports that he was still alive when Mongke Khan took the throne in 1251, making him around 100.