Emperor Yūryaku (雄略天皇 Yūrayku Tennō, c. 418 - August 7, 479) was the 21st imperial ruler of Japan, according to the traditional order of succession. No firm dates can be assigned to this emperor or to his reign, but he is believed to have ruled the country during the late 5th century CE. August 7 is the 219th day of the year in the Gregorian Calendar (220th in leap years), with 146 days remaining. ... Events End of the Song Dynasty and beginning of the Qi Dynasty in southern China. ... His Imperial Majesty, Emperor Akihito of Japan The Emperor of Japan (天皇, tennō) is Japans titular head of state and the head of the Japanese imperial family. ... // Events Romulus Augustus, Last Western Roman Emperor Rome sacked by Visigoths in 410. ...

According to Kojiki and Nihonshoki, Yūryaku was named Prince Ohatsuse Wakatake at birth. He was the fifth and youngest son of Emperor Ingyō. After his elder brother Emperor Ankō was murdered, he won the struggle against his other brothers and became the new emperor. He had three wives (including his consort Kusahahatahi) and his successor, Prince Shiraka (Emperor Seinei), was his son by his wife Katsuragi no Karahime. Kojiki or Furukotofumi (古事記) is the oldest known historical book about the ancient history of Japan. ... Nihonshoki (日本書紀) is the second oldest history book about the ancient history of Japan. ... Emperor Ingyō (允恭天皇 Ingyō Tennō) was the 19th imperial ruler of Japan, according to the traditional order of succession. ... Emperor Ankō (安康天皇 Ankō Tennō) was the 20th imperial ruler of Japan, according to the traditional order of succession. ... Emperor Seinei (清寧天皇 Seinei Tennō) was the 22nd imperial ruler of Japan, according to the traditional order of succession. ...

Yūryaku is believed to be referred to as Bu in contemporary Chinese records. These records state that Bu began his rule before 477, was recognized as the ruler of Japan by the Song, Qi, and Liang dynasties, and continued his rule through 502. Bu sent messengers to the Song dynasty in 477 and 478. Events Huneric becomes king of Vandals Aelle king of the South Saxons, arrives in England, with his three sons, near Cymenshore. ... The Song Dynasty (宋朝, previous spelling Sung) (420-479) was first of the four Southern Dynasties in China, followed by the Qi Dynasty. ... Qi Dynasty 齊朝 (479-502) was the second of Southern dynasties in China, followed by the Liang Dynasty. ... Liang Dynasty (also: Leung in Cantonese,) 梁朝 (502-557) was the third of Southern dynasties in China, followed by the Chen Dynasty. ... Events End of the Qi Dynasty and beginning of the Liang Dynasty in southern China. ...