In the summer of 1862, in what came to be known as the Namamugi Incident, four English men and women of Yokohama settlement on their way to see Heiken-ji Temple by horse were cut down in Namamugi village (today's Tsurumi ward of the city of Yokohama) by warriors in the Satsuma Daimyo's procession, an event that deeply shook the shogunate.
1862年夏、平間寺見物のため乗馬していた横浜居留地の英人男女4人が生麦村（現横浜市鶴見区(横浜市)）で薩摩の大名行列に切りつけられる生麦事件が起こり、幕府を震撼させた。