Ō no Yasumaro was a distinguished Japanese nobleman and bureaucrat, renowned for his contributions as a writer and historian. He is believed to be the son of Ō no Honji, who played a significant role in the Jinshin War of six hundred seventy-two. This familial connection to a pivotal historical event may have influenced Yasumaro's later endeavors in chronicling Japan's rich history.
His most notable achievement came when he was entrusted by Empress Genmei, who reigned from seven hundred seven to seven hundred twenty-one, to compile and edit the Kojiki. This monumental work is recognized as the oldest extant history of Japan. In the year seven hundred eleven, Yasumaro began this ambitious project, drawing upon various clan chronicles and native myths to weave a comprehensive narrative of Japan's past.
With the assistance of Hieda no Are, Yasumaro completed the Kojiki in the following year, seven hundred twelve. The finished work was presented to Empress Genmei in three volumes, marking a significant milestone in the preservation of Japanese history and culture. Through his dedication and scholarly efforts, Ō no Yasumaro has left an indelible mark on the historical landscape of Japan.