was a Japanese

samurai The samurai () were members of the warrior class in Japan. They were originally provincial warriors who came from wealthy landowning families who could afford to train their men to be mounted archers. In the 8th century AD, the imperial court d ...

of the

Sengoku period The was the period in History of Japan, Japanese history in which civil wars and social upheavals took place almost continuously in the 15th and 16th centuries. The Kyōtoku incident (1454), Ōnin War (1467), or (1493) are generally chosen as th ...

. He served in the

Imagawa clan was a Japanese samurai clan that claimed descent from the Seiwa Genji by way of the Kawachi Genji. It was a branch of the Minamoto clan by the Ashikaga clan. Origins Ashikaga Kuniuji, grandson of Ashikaga Yoshiuji, established himself in ...

and

Ii clan is a Japanese clan which originates in Tōtōmi Province. It was a retainer clan of the Imagawa clan, Imagawa family, and then switched sides to the Matsudaira clan of Mikawa Province at the reign of Ii Naotora. A famed 16th-century clan membe ...

. He was the son of Ono Masanao.

Life

Michiyoshi was born in Tōtōmi. His father (Masanao) was Ii's vassal. He had secret communications with

Imagawa Yoshimoto was a Japanese ''daimyō'' (feudal lord) of the Sengoku period. Based in Suruga Province, he was known as ; he was one of the three ''daimyō'' that dominated the Tōkaidō region. He died in 1560 while marching to Kyoto to become Shogun. He ...

. When

Ii Naomitsu was a Japanese samurai of the Sengoku period, who had served in the Imagawa clan was a Japanese samurai clan that claimed descent from the Seiwa Genji by way of the Kawachi Genji. It was a branch of the Minamoto clan by the Ashikaga clan. ...

planned to rebel against Imagawa, Masanao secretly informed Imagawa and Naomitsu was killed. About ten years later, Masanao got sick and died. After that, a son of Naomitsu (

Ii Naochika was a Japanese samurai of the Sengoku period, who served the Imagawa clan. It was planned that he would marry Ii Naomori's daughter Naotora but then he fled to Shinano, to avoid committing suicide caused by slander from an Imagawa retainer. La ...

) returned from Shinano to Iinoya and inherited

. Michiyoshi had to serve Naochika, although they were on bad terms. When Ii Naochika planned a rebellion against

Imagawa Ujizane was a Japanese ''daimyō'' who lived in the Sengoku period through the early Edo period. He was the tenth head of the Imagawa clan and was a son of Imagawa Yoshimoto and the father of Imagawa Norimochi and Shinagawa Takahisa. Biography Ujizane ...

, Michiyoshi secretly passed information to Imagawa, so Naochika was killed by

Asahina clan The was a Japanese clan during the Sengoku period who served the Imagawa clan of Suruga Province as retainer. Two genealogies of the clan were known. The one says that it had roots in Fujiwara clan. The other says that the clan was descended from ...

(lords of

Kakegawa castle is a ''hirayama''-style Japanese castle. It was the seat of various ''fudai daimyō'' clans who ruled over Kakegawa Domain, Tōtōmi Province, in what is now central Kakegawa, Shizuoka Prefecture, Japan. Background Kakegawa Castle is located a ...

and servants of the

). After that, he occupied Iinoya and tried to kill Naochika's son (

Ii Naomasa was a general under the Sengoku period ''daimyō'', and later ''shōgun'', Tokugawa Ieyasu.Ii Naotora Ii Naotora (井伊直虎, d. 12 September 1582) was a daimyō of the Sengoku period and head of the Ii clan, a feudal samurai clan of medieval Japan. There are two theories regarding Naotora's identity: * The classical theory from Edo period sta ...

(Naomasa's adopted mother ) and

Tokugawa Ieyasu Tokugawa Ieyasu (born Matsudaira Takechiyo; 31 January 1543 – 1 June 1616) was the founder and first ''shōgun'' of the Tokugawa shogunate of Japan, which ruled from 1603 until the Meiji Restoration in 1868. He was the third of the three "Gr ...

. He was defeated in 1569. He was beheaded by Tokugawa Ieyasu's order, and his head was disgraced in public.

References

* Samurai Ii clan 1569 deaths {{Japan-mil-bio-stub