Belonged to the lineage of the Prince Takamune of the Taira clan, the Hiramatsu was a family of dojo kuge (nobles occupying relatively high ranks) of which the founder was Tokitsune HIRAMATSU (Chunagon (vice-councilor of state) of Junii (Junior Second Rank)) (1599-1654), the second son of Tokiyoshi NISHINOTOIN (Sangi (councilor) of Junii (Junior Second Rank)) (1552-1640).
平松家（ひらまつけ）は平氏平氏高棟王流で、西洞院時慶（従二位・参議）（1552年-1640年）の次男平松時庸（ときつね）（従二位・中納言）（1599年-1654年）を祖とする堂上家。