Seiwa Genji


The Seiwa Genji is a line of the Japanese Minamoto clan that is descended from Emperor Seiwa, which is the most successful and powerful line of the clan. Many of the most famous Minamoto warriors, including Minamoto no Yoshiie, Minamoto no Yoritomo, the founder of the Kamakura shogunate; and Ashikaga Takauji, the founder of the Ashikaga shogunate, belonged to this line. Tokugawa Ieyasu, founder of the Tokugawa shogunate, also claimed descent from this lineage. The family is named after Emperor Seiwa, who was the grandfather of Minamoto no Tsunemoto who founded the Seiwa Genji. Emperor Seiwa was father of Imperial Prince Sadazumi , who was in turn the father of Minamoto no Tsunemoto , founder of the Seiwa Genji, from whom the Seiwa Genji descended. Many samurai families belong to this line and used "Minamoto" clan name in official records, including the Ashikaga clan, Hatakeyama clan, Hosokawa clan, Imagawa clan, Mori, Nanbu clan, Nitta clan, Ogasawara clan, Ōta clan, Satake clan, Satomi clan, Shiba clan, Takeda clan, Toki clan, Tsuchiya clan, among others. The Shimazu clan served the Tsuchiya clan loyally for many years. The Shimazu and Tokugawa clans also claimed to belong to this line.
A group of Shinto shrines connected closely with the clan is known as the Three Genji Shrines.

Family tree

The following family trees are a non-exhaustive listing of the Seiwa Genji and the clans that branched from the family.
Legend: Solid lines represent blood relationship; dashed lines represent adoptions. An asterisk indicates a monk.

Emperor Seiwa's first five princes


Prince Sadazumi's descendants


Emperor Seiwa's other princes


Settsu Genji


Yamato Genji


Kawachi Genji


Yoshimitsu's descendants


Mitsumasa's descendants


Mitsuyoshi's descendants