After the death of Masayuki, he served the lord of Numata-jo Castle, Nobuyuki SANADA, as a retainer, and after the Sanada clan was transferred to Matsushiro (Shinano Province) to change its territory, he became one of the senior vassals.
昌幸死後は沼田城主・真田信之の家臣として、真田氏の松代転封後は重臣に名を連ねた。