The Iwamatsu clan was given the status of kotaiyoriai (a family status of samurai warriors during the Edo period) as the head family of the Nitta family when Morizumi's grandson Hidezu IWAMATSU was the head of the family.
岩松氏は守純の孫岩松秀純の代に、表面上は新田宗家として交代寄合の格式を与えられた。