It is said that Oguri was born as a son of FUJIWARA no Kaneie, an aristocrat in Heian-kyo (ancient capital of Japan in present-day Kyoto), and a woman from the Minamoto clan in Hitachi Province and died at the age of 83, but he is sometimes depicted as a personality in the 15th or 16th century.
平安京の貴族藤原兼家と常陸国の源氏の母の間に生まれ、83歳で死んだとされるが、15、16世紀頃の人物として扱われることもある。