Shimazu Tadayoshi

Shimazu Tadayoshi (島津 忠良, October 14, 1493 – December 31, 1568) was a daimyō (feudal lord) of Satsuma Province during Japan's Sengoku period.

In 1539 though, during the Battle of Ichirai, Tadayoshi defeated Katsuhisa (who would regain power later) and Takahisa came to be recognized by all members of the Shimazu clan as the head.

[2] He and his son lived together for a number of years at Uchiujijó castle and after Takahisa's succession, Tadayoshi retired to a monastery which belonged to the Zen sect.

[2] During this time Tadayoshi called himself Shimazu Nisshinsai (or Jisshinsai) (島津日新斎)[2][3] He held a great amount of power, trading with the Ryūkyū Kingdom and Ming-dynasty China.

[2] Iroha uta played an important part in ethical teachings across the Satsuma han until the end of the Edo period.