courtesy title of Kujō Yoshitsune, Heian-Kamakura period court nobleman and poet

a surname

(archaic) the chief advisor to the emperor, similar to a viceroy or vizier

a regent: one who rules in the place of a monarch because the monarch is too young, absent, or disabled / regency: the position or station of a regent

role

accomplish, perform, fulfill

courtesy title of Saionji Kintsune, Kamakura-period poet and nobleman

importance, consequence, significance

important, significant

(politics, historical) the head of the 太政官 (Daijō-kan, “Great Council of State”, the highest government office under the 律令 (Ritsuryō) system), equivalent to a “grand minister” or “chancellor of the realm”