The Six Roles of Osaka

…A title of a position in the Edo Shogunate. Also called a castle guard. There was one official each for the Roju control, Kyobashiguchi, and Tamazukuriguchi. They were responsible for guarding the inside and outside of the Kyobashiguchi of Osaka Castle and the Sujitetsumon Gate of the northern outer moat, as well as the inside and outside of the Tamazukuriguchi and the east partition. According to the Ryuei Honin, the first were Takagi Masatsugu and Inagaki Shigetsuna in 1621 (7th Genna period), and after these two there was a hiatus for a while, but it was revived and continued until the end of the Edo period. 29 officials were appointed to the Kyobashiguchi and 28 to the Tamazukuriguchi. They were selected from daimyo with 10,000 to 20,000 koku of rice, and the term of office was indefinite, with the long-term being 27 years and the short-term being less than one year. In many cases, they were transferred from daibanto to soshaban or wakadoshiyori. …

*Some of the terminology used in reference to the "Osaka Rokuyaku" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…江戸幕府の職名。城番ともいう。老中支配，京橋口，玉造口各定番1名。大坂城京橋口内外と北の外曲輪（くるわ）筋鉄門の警衛，玉造口内外と東仕切の警備に当たった。《柳営補任》によれば1621年(元和7)高木正次，稲垣重綱が任命されたのが初めで，両名のあとしばらく空白があったが復活，幕末に及んだ。京橋口29名，玉造口28名が就任。1万～2万石の大名から選ばれ，任期は不定で長期は27年，短期は1年未満，大番頭から転じ，奏者番また若年寄となる例が多い。…

※「大坂六役」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報