Ichinobe no Oshiwa
was the eldest son of Japanese Emperor Richū; and he was the father of Prince Woke (袁祁王), and Prince Oke (億計). They would later become known as Emperor Kenzō and Emperor Ninken. His wife was Wae-hime. No firm dates can be assigned to the lives or reigns of this period, but the reign of Emperor Ankō is considered to have lasted from 456 to 479; and Oshiwa died during Ankō's reign. Traditional history 
According to the Nihonshoki, Oshiwa was killed in a hunting accident by Emperor Yūryaku. His sons were adopted as heirs by Emperor Seinei. They are known as Prince Woke (or Kenzō-tennō) and as Prince Oke (or Ninken-tennō). References 

5th-century births
5th-century deaths
Japanese princes
People of Kofun-period Japan
Sons of emperors