He was born the eldest son of Sakai Tadayuki at the Sakai residence in Edo. The Sakai were a distinguished house that had served the Tokugawa since their Mikawa days, and his grandfather Tadayo was a senior retainer who served three shoguns, Ieyasu, Hidetada and Iemitsu. Little is known of his early childhood, but he is thought to have been raised at the Edo residence.
When the shogun Tokugawa Iemitsu visited his grandfather Tadayo's residence, the young Tadakiyo met the shogun for the first time and received a short sword from Iemitsu. A few days later the retired shogun Hidetada also visited, and Tadakiyo was again given a sword. As heir to a great house, he enjoyed the favor of the shogun's family from childhood.
After his grandfather and father died one after the other the year before, Tadakiyo inherited the 100,000-koku Umayabashi domain in Kōzuke, today's Maebashi. His younger brother Tadayoshi was also given a separate domain. For the young Tadakiyo, it was the start of the heavy duty of leading a great house. The next year he entered his domain in Kōzuke for the first time with his brother.
He began serving at Edo Castle and was appointed sōjaban, a post his father had also held. Handling such duties as announcing daimyo when they met the shogun, Tadakiyo mastered warrior etiquette and carried out many ceremonies in the castle. The knowledge and connections he gained here became the foundation of his later power over shogunate politics.
The shogun Iemitsu died, and the still young Ietsuna became the fourth shogun. A story tells that this year, visiting Kyoto and seeing rows of huts built to help beggars, Tadakiyo said that true benevolent government meant creating a world without beggars. However, opinions differ on whether this anecdote is reliable.
He was appointed rōjū and at once took the leading position among them. Together with experienced councillors such as Matsudaira Nobutsuna and Abe Tadaaki, he supported the young shogun Ietsuna and ran the shogunate's government. As rule shifted from force toward law and ceremony, Tadakiyo took on heavy responsibilities.
A land dispute between the Tosa and Uwajima domains was brought to the shogunate. When other councillors tried to issue a ruling that broke earlier precedent, Tadakiyo insisted the shogun's own judgment mattered and strongly demanded the case be judged at Edo Castle. He was sharply criticized by Nobutsuna, but in the end the case was settled according to precedent from Iemitsu's time.
He took up the post of tairō, the highest in the shogunate. Because the shogun Ietsuna often answered his retainers' proposals with "Let it be so", he was called "Lord Sayōsei", and Tadakiyo is said to have wielded great power. Since the Sakai residence stood near the sign at Edo Castle where riders had to dismount, he was later nicknamed the "Geba shogun".
The inquiry into the Date Disturbance, a succession dispute in the Date house of Sendai, was held at Tadakiyo's residence, and a tragic clash among domain retainers broke out there, leaving people dead. Later plays and novels portrayed Tadakiyo as a villain behind the affair, but this was fiction.
There is a theory that, when Ietsuna fell gravely ill, Tadakiyo tried to bring in an imperial prince as shogun, but it is not certain. When Ietsuna died and his younger brother Tsunayoshi became the fifth shogun, Tadakiyo was ordered at the end of the year to rest for illness and was removed as tairō. So ended his days of great power.
He died soon after retiring and was buried at Ryūkai-in in his domain of Maebashi. A story tells that his death was so sudden that Tsunayoshi grew suspicious. Later generations tended to judge him a despot, but in recent years some have reassessed him as a statesman who respected the shogun's judgment and precedent.
Matsudaira NobutsunaTokugawa IemitsuTokugawa Ietsuna
Kumazawa BanzanAmakusa ShirōMitsui TakatoshiYamaga SokoItō JinsaiTokugawa MitsukuniKaibara EkikenShibukawa Harumi
People of the Edo period ・ People by period
Based on facts found in textbooks and biographies. Uncertain points are marked as such.