Doi Toshikatsu Doi Toshikatsu The adopted son of Doi Toshimasa, Toshikatsu is generally believed to be the biological son of Mizuno Nobumoto, though there are some who claim he was an illegitimate son of shōgun Tokugawa Ieyasu. He served the shogunate as advisor to shōgun Tokugawa Hidetada for many years, and played an important role in communicating and overseeing the enforcement of shogunal policy across the country; Doi also helped effect trade and diplomatic relations between Japan and the Thai Kingdom of Ayutthaya. He lost much of his influence and power upon Hidetada's death in 1632. Six years later, Doi became one
Peter Doi became the first Japanese member of the College of Cardinals. He attended the Second Vatican Council from 1962 to 1965, and was later one of the cardinal electors who participated in the 1963 papal conclave that selected Pope Paul VI. Doi died in Tokyo, aged 77. He is buried in St. Mary's Cathedral. Doi, along with Stefan Wyszyński, assisted Paul Peter Meouchi in delivering one of the closing messages of the Second Vatican Council on 8 December 1965. Peter Doi Peter Tatsuo Doi (土井 辰雄 "Doi Tatsuo") (22 December 1892—21 February 1970) was a Japanese Cardinal of the Catholic Church.