His father TAIRA no Chinki served as Mimasaka no kuni no suke (Assistant Secretary of the Governor of Mimasaka Province), belonged to the Kanmu-Heisi (Taira clan) Takamune-O line, rose to Jushiinojo (Junior Fourth Rank, Upper Grade), and was given Jusanmi (Junior Third Rank) after death, and Korenaka was the first son of this Chinki.
桓武平氏高棟王流従四位上（贈従三位）美作国介平珍材の長男。