Date of Birth: 
About Ōnishiki Ittetsu
- Onishiki Ittetsu (born 11 September 1953 as Morio Obori) is a former sumo wrestler from Sado, Niigata, Japan.
- He made his professional debut in May 1968, and reached the top division in September 1973.
- His highest rank was komusubi.
- He retired in January 1988 and became an elder in the Japan Sumo Association under the name Yamashina, holding the Special Executive position.
Read more at Wikipedia