The founder of the Date clan and Hitachi-nyudo Nensai are identified as Munemura, and Tomomune and Munemura are described as a father and son, and it says that the Nakamura clan was succeeded by the second son of Tomomune, Tomosada.
伊達氏初代も常陸入道念西も宗村とし、朝宗と宗村は親子で、中村氏は朝宗の次男の朝定が継いだとある。