TOKUGAWA IEYASU: Founder of the TOKUGAWA SHOG. Tokugawa Ieyasu was a member of the MINAMOTO clan and a retainer of ODA NOBUNAGA, a candidate for the shogunate. When Oda Nobunaga was assassinated by Toyotomi Hideyoshi, Tokugawa changed his allegiance and even had himself appointed guardian for Toyotomi's young son and heir. He declared war on rival warlords, intent upon winning the shogunate for themselves, defeating them at the Battle of Sekigahara in 1603. As the most powerful man in JAPAN, Tokugawa then appointed himself SHOGUN and proceeded to eliminate his rivals. In 1605 he abdicated the shogunate in favor of his son, thereby establishing a dynasty and freeing himself of the duties of state so that he could consolidate his family's new-found power. In 1615 he eliminated the last members of Hideyoshi's family, thereby ensuring his family's reign. Although he was initially tolerant of foreigners in JAPAN and even encouraged trade with England, Tokugawa grew suspicious of the growing Japanese Christian population, which he could not count on for support. In 1614 he outlawed Christianity and destroyed the country's churches. Tokugawa himself was an ardent Confucianist, who organized his son's government on strict Confucian principles. (See also Japan article).