A Sadler 
The Maker of Modern Japan [PDF ebook] 
The Life of Tokugawa Ieyasu

Tokugawa Ieyasu founded a dynasty of rulers, organized a system of government and set in train the re-orientation of the religion of Japan so that he would take the premier place in it. Calm, capable and entirely fearless, Ieyasu deliberately brought the opposition to a head and crushed in a decisive battle, after which he made himself Shogun, despite not being from the Minamoto clan. He organized the Japanese legal and educational systems and encouraged trade with Europe (playing off the Protestant powers of Holland and England against Catholic Spain and Portugal). This book remains one of the few volumes on Tokugawa Ieyasu which draws on more material from Japanese sources than quotations from the European documents from his era and is therefore much more accurate and thorough in its examination of the life and legacy of one of the greatest Shoguns.