井伊直弼
After suppressing a rebellion originating in his own province, many Satsuma samurai considered Ōkubo a traitor. On May 14, 1878, Ōkubo was assassinated by Shimada Ichirō and six Kaga Domain samurai on his way to the imperial palace, only a few minutes' walk from the Sakurada gate where Ii Naosuke had been assassinated 18 years earlier.