noun
hereditary daimyo (Tokugawa loyalist)
Historical term for daimyo whose families had served Tokugawa Ieyasu before the Battle of Sekigahara (1600). They formed a core of trusted vassals in the Edo-period feudal hierarchy.
譜代大名は江戸幕府の重要な役職に就くことが多かった。
Fudai daimyo often held important posts in the Edo shogunate.
The Ii family was one of the powerful fudai daimyo.