Studying at college in his youth, he possessed a quick tongue. In 834,
Emperor Ninmyō summoned him and appointed Yoshimi to serve him personally as a and . He was steadily promoted in the court. In 838 he was bestowed the rank of , in 840 promoted to , in 841 to , in 843 to and governor of
Awa province, in 844 to director of the
kurōdo-dokoro, and in 846 to and . In 842, he also led 40 troops in surrounding
Prince Tsunesada in the succession dispute known as the
Jōwa Incident. Finally, in 848, he joined the ranks of the
kugyō with a promotion to
sangi. In 850, Yoshimi's nephew Crown Prince Michiyasu took the throne as
Emperor Montoku. Yoshimi was promoted to and appointed as . In 851 he surpassed his brother
Nagara, who had been first to make
sangi, with a promotion to
chūnagon, receiving the rank of in the same year. In 854, he was promoted again to
dainagon and . In 857, when his brother
Yoshifusa was made
daijō-daijin, Yoshimi filled his old rank of
udaijin. In 859, he was promoted to . In 864 Yoshimi sent his daughter Tamiko as a bride to
Emperor Seiwa. Yoshimi's older and more powerful brother Yoshifusa was cautious of his popularity and success. In the
Ōtenmon Incident of 866, Yoshimi ordered
Minamoto no Makoto's arrest based on the testimony of
Tomo no Yoshio, but Yoshifusa protested Makoto's innocence and prevented it. After this, Yoshimi lost most of his political influence. In 867, Yoshimi suddenly became ill in his chambers, and died that same month. He was posthumously granted the rank of . In accordance with his will, he was given a simple burial, his coffin covered with just a single sheet. == Personality and anecdotes ==