About Kongō Masahiro
Kongō Masahiro (18 November 1948 - 12 August 2014) was a former sumo wrestler from Hokkaidō, Japan. His highest rank was sekiwake and he won a top division tournament championship in 1975. He was a sumo coach and head of the Nishonoseki stable from 1976 until 2013. He first appeared on the banzuke ranking sheets in July 1964 and won all seven of his bouts, taking the jonokuchi championship with a perfect 7–0 record.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.