When Masamune's shochoshi (the eldest child born out of wedlock) Hidemune DATE was transferred to the Uwajima Domain of Iyo Province, he was appointed by Masamune to assist Hidemune and direct domain duties.
さらには政宗の庶長子・伊達秀宗が伊予国宇和島藩に移封されると、政宗から秀宗の補佐と藩政の指導を任されている。