The clan claimed descent from the Seiwa-Genji. The clan was founded by Ashikaga Kōshin (died 1330) who is the son of Ashikaga Yasuuji (1216-1270).[2]Near the end of the 13th century, the Isshiki were established as head of Isshiki Domain in Mikawa Province;[1] and the name dates from this time.
The Isshiki held prominent offices in the bureaucracy of the Ashikaga shogunate.[1] The Isshiki were one of four clans with the right to be head (bettō) of the Samurai-dokoro or war department.[3] Later, the Isshiki were military governors of the province of Tango since 1336. In 1575, Oda Nobunaga confirmed their Tango Province.[4] The family lost its domains during the wars of the Sengoku period.[1]
^ a b c d ePapinot, Jacques Edmond Joseph. (1906). Dictionnaire d’histoire et de géographie du Japon; Papinot, (2003). "Isshiki," Nobiliare du Japon, p. 16; retrieved 2013-5-25.
^Sesko, Markus. Legends and Stories Around the Japanese Sword, p. 64.
^De Benneville, James Seguin. (1916). Tales of the Samurai: Oguri Hangwan Ichidaik, p. 136 note.
^ a b cRowley, Gene. (2013). An Imperial Concubine's Tale, p. 27.
^Ōta, Gyūichi. (2011). The Chronicle of Lord Nobunaga, p. 140.
^Sansom, George (1961). A History of Japan, 1334-1615. Stanford University Press. pp. 90–91. ISBN 0804705259.
^"朝日日本歴史人物事典「稲富祐直」の解説" (in Japanese). kotobank. Retrieved 29 October 2021.