Ishin Sūden

, also known as Konchi'in Sūden (金地院 崇伝), was a Japanese Rinzai Zen monk who was an advisor to Shogun Tokugawa Ieyasu, and later to shoguns Tokugawa Hidetada and Iemitsu on religious matters and foreign affairs. He was the 270th abbot of Nanzen-ji. He played a significant role in the initial development of the Tokugawa shogunate.

Life Sūden was born in 1569, in Kyoto, the second son of Isshiki Hidekatsu, a shogunate retainer of the Ashikaga shogunate. Born to a prestigious family, he was promised a future as a close associate of the Ashikaga shoguns. However, after the shogunate was overthrown in 1573, he became a disciple of the 266th Genpō Reizō at Nanzen-ji, the most prestigious of all government temples. He studied under Seishuku Tokurin at Takagamine Kinji-in and at Sanbō-in of Daigo-ji.

In October 1593, at the age of 24, he became the abbot of Fukugon-ji in Settsu Province and in November of the same year, of Sagami Zenkō-ji in Sagami Province. In 1605, at the age of 37, he became the abbot of Kenchō-ji, the first of the five temples of Kamakura. the highest position among the government temples, and received a purple robe from Emperor Go-Yōzei. ), both of which remain valuable primary sources on the nature of diplomacy of the time, and on specific events.

Selected works 影印本異国日記: 金地院崇伝外交文書集成 (Eiinbon Ikoku nikki: Konchiin Sūden gaikō monjo shūsei; Register of Foreign Affairs). Tokyo: Tokyo Bijutsu. ; 新訂本光國師日記 (Shintei Honkō kokushi nikki (Chronicles of Master Honkō). Tokyo: Zoku Gunsho Ruijū Kanseikai.