Masuda Shirō Tokisada (益田 四郎 時貞; c. 1621? – 28 February 1638), also known as Amakusa Shirō (天草 四郎), was a Japanese Christian of the Edo period and leader of the Shimabara Rebellion, an uprising of Japanese Roman Catholics against the Shogunate. His Christian name was Geronimo and was later known as Francisco.
The uprising led by Shirō was defeated, and he was executed at the age of 17. His head was displayed on a pike near Nagasaki as a warning to Christians. His failures were reflected in the 1962 movie Amakusa Shirō Tokisada (shown in English-speaking countries as The Christian Revolt or The Revolutionary), by the Japanese movie director Nagisa Oshima.
