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Karō (家老, house elder) were top-ranking samurai officials and advisors in service to the daimyōs of feudal Japan.

In the Edo period, the policy of sankin-kōtai (alternate attendance)1 required each daimyō to place a karō in Edo and another in the home han (feudal domain). A karō who was in charge of a castle was called the jōdai karō (城代家老), while the one in Edo was called the Edo karō (江戸家老). A general term for a domain-based karō is kunigarō (国家老).

Some domains referred to this position as bugyō (奉行) or toshiyori (年寄).

An example of events involving a karō comes from one of the most famous of all samurai tales, Kanadehon Chūshingura. The final Asano daimyō of the Ako han was Asano Naganori. While he was in Edo, he was sentenced to commit seppuku for the offense of drawing a sword against Kira Yoshinaka in Edo Castle. When the shogunate abolished the Ako han, all the Ako samurai became rōnin. Ōishi Kuranosuke, the jōdai karō, led 46 other rōnin in a vendetta against Kira. As a result of his leadership in the Forty-seven Ronin affair, Ōishi went down in history as the most famous of all karō.

The shogunate post of rōjū (elder) had many similarities to that of karō.

See also[edit]


[1]Sankin kōtai ("alternate attendance") was a policy of the shogunate during most of the Edo period of Japanese history. The purpose was to control the daimyōs (feudal Lords). Generally, the requirement was that the daimyōs of every han (province) move periodically between Edo (the Japanese capital) and his han, typically spending alternate years in each place. His wife and heir were required to remain in Edo as hostages. The expenditures necessary to maintain residences in both places, and for the procession to and from Edo, placed financial strains on the daimyōs making them unable to wage war. The frequent travel of the daimyōs encouraged road building and the construction of inns and facilities along the routes, generating economic activity.