When Ieyasu lost his calm and tried to go to Kyoto to follow Nobunaga, it is said that Tadakatsu was the one who warned, "Our enemies are in Honnoji, TOKUGAWA Ieyasu."
家康が京都に行って信長の後を追おうと取り乱したのを忠勝が諌めて、｢本能寺の変徳川家康｣を行わせたという。