It is said Ieyasu put the Ii clan, which had been a pro-Imperial family for generations, in Hikone near Kyoto to protect the Imperial family in times of emergency, which suggests that the Ii family had gained the strong confidence of the Tokugawa clan.
家康は、非常時に皇室を守るため、京都に近い彦根に代々勤皇の家柄である井伊家を配したと伝えられ、これを見ても徳川家から強い信頼を受けていたと考えられる。