Analysis of information sources in references of the Wikipedia article "Hachiman" in English language version.
It was only later, sometime in the 9th century, that the deity became associated with Emperor Ōjin, and later still that Hachiman became worshipped as the god of archery and war, ultimately becoming the tutelary deity of the Minamoto clan and its famed warrior Minamoto Yoritomo 源頼朝 (1147–99), founder of the Kamakura shogunate