The son of Tanemune, Harumune DATE, was first appointed as Oshu Tandai, the post successively held by the Osaki clan, a branch family of the Shiba clan (a powerful family of the Ashikaga Shogun Family), while a dictatorship by retired Tanemune caused anti-Tanemune feeling to build up among the vassals.
その子　伊達晴宗は足利将軍家有力一門　斯波氏の流れをひく大崎氏歴代の職である奥州探題に補任されたが、一方で隠居の稙宗の専制に対する家臣団の反発が蓄積された。