Doi Toshikatsu
…1644) was a top-ranking official in Japan's Tokugawa shogunate during its early decades, and one of the chief advisors to the second Tokugawa shōgun, Hidetada. 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…