Both the founder of the Date clan and Hitachi-nyudo Nensai are identified as Munemura, and the second family head is described as Sukemune who is identified as Yoshihiro, and the third family head is described as Tokitsuna.
伊達氏初代も常陸入道念西も宗村とし、二代は資宗＝義広とし、三代に時綱を挙げる。