Tennō Ōjin was an Emperor of the ancient period. He was the 15 ruler of Japan.
Tennō Ōjin was born in 200 in Fukuoka. According to legend, his father, Emperor Chuai, died suddenly while on his way to attack the state of Silla in Korea. His mother, Empress Jingti, though already pregnant with the future Emperor Ojin, successfully carried out the expedition against Silla and returned to Japan, giving birth to her son at the province of Tsukushi in Kyushu.
On his mother’s death, he became the fifteenth ruler of Japan. Though there is some doubt about the earlier rulers, it is believed that Emperor Ojin was an actual historical figure.
He is said to have reigned for forty years.
His grave mound, situated in Habikino in Osaka Prefecture, measures 418 meters in length and, along with that of his son, Emperor Nintoku, which is the largest grave mound in the world, gives evidence of the remarkable degree of power and prospertity that the Yamato state had attained at this time.