Ii clan (Japanese: 井伊氏, Hepburn: Ii-shi) is a Japanese clan which originates in Tōtōmi Province. It was a retainer clan of the Imagawa family, and then switched sides to the Matsudaira clanofMikawa Province at the reign of Ii Naotora. A famed 16th-century clan member, Ii Naomasa, adopted son of Ii Naotora, was Tokugawa Ieyasu's son-in-law and one of his most important generals. He received the fief of HikoneinŌmi Province as a reward for his conduct in battle at Sekigahara. The Ii and a few sub-branches remained daimyō for the duration of the Edo period. Ii Naosuke, the famed politician of the late Edo period, was another member of this clan.
| Ii 井伊 | |
|---|---|
The Ii clan mon
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| Home province | Mikawa |
| Parent house | Fujiwara clan |
| Titles | Various |
| Founder | Fujiwara Tomosuke |
The clan claims descent from Fujiwara no Yoshikado,[1] who had been one of the Daijō daijin during the ninth century.
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