However, Masayuki SANADA, the lord of Ueda-jo Castle in Shinano Province, who had controlled Numata, did not accept the condition, and became to belong to the Uesugi clan in Echigo Province, separated from Ieyasu's side.
ところが、沼田を支配していた信濃国・上田城主・真田昌幸はこれに応じず、家康から離反して越後国の上杉氏に寝返った。