Gotairo (five administrators in Toyotomi regime) (五大老)
Gotairo indicates the five most powerful daimyo clans, appointed as Karo (or Tairo) of the Toyotomi family, and acted as executive organs of the Toyotomi Administration at the last days of the administration, during the Bunroku era (1593-1598). In those days, they were called 'Gonin bugyo,' but it became quite confusing with 'Gonin gobugyo' during the Edo period (though they were mainly called 'Gonin otoshiyori' at the time); as a result, the term 'Gotairo' was coined later to indicate the former to distinguish between them.
Hideyoshi TOYOTOMI established a council system of Gotairo to support his son Hideyori in case of his death, expecting the five members to balance each other to prevent the possible emergence of Ieyasu TOKUGAWA. However, the council system became merely nominal through Ieyasu's frequent covenant violations. Gotairo prevented Ieyasu TOKUGAWA from surpassing the Toyotomi family until the death of Toshiie MAEDA in 1599, though they could not stop Ieyasu to be dominating.
Tairo
Ieyasu TOKUGAWA (possessed lands worth 2,560,000 koku of rice in Kanto)
Toshiie MAEDA (possessed lands worth 830,000 koku of rice in the Hokuriku region and in other areas including Kaga Province)
Terumoto MORI (possessed lands worth 1,200,000 koku of rice in the Chugoku region, and in other areas including the western half of Kibi Province and Aki Province)
Hideie UKIATA (possessed lands worth 570,000 koku of rice in the Chugoku region and the eastern half of Kibi Province)
Takakage KOBAYAKAWA (possessed lands worth 330,000 koku of rice in the northern Kyushu area and Bizen Province) - during the Bunroku era.
Kagekatsu UESUGI (possessed lands worth 1,200,000 koku of rice in Aizu Province) - after the death of Takakage in 1597
After the death of Toshiie MAEDA, his heir Toshinaga inherited the post in the council of Gotairo.