The Toyoda clan (豊田氏, Toyoda-shi) was an immigrant clan from Korea that was active in Japan since the Kofun period that claims descent from Prince Imseong of Paekche.
Origin The clan is one of the many Toraijin clans that immigrated to Japan from Korea during the Kofun period.
According to the clan's genealogy, the Toyota Family Genealogy (豊田家系譜; とよたけいふ; Toyotakeifu), the family claims descent from Prince Imseong who in turn was a descendant of King Dongmyeong of Goguryeo.
However, modern historians question the authenticity of the evidence alluding to the existence of Prince Imseong, positing that the prince was a fabricated individual who never truly existed, and someone many Japanese clans of foreign origin utilized to proclaim a clan founder. The general consensus is that even though the prince may be a fictional individual, most clans of self-proclaimed foreign origin have roots outside of Japan.
Later in history, the family also claimed to have been descended from Fujiwara no Michitaka of the Fujiwara clan during the Sengoku period. However, due to inconsistency surrounding the genealogy and historicity of the claim, it is regarded as an embellishment and an attempt to elevate their status.
Names While "Toyoda" is the most common way of reading the characters "豊田", it is also known under the pronunciation of "Toyota", though it is not frequently used and may create confusion for readers.
Legacy It is believed that the family is related to the Tatara clan, and in turn, the Ōuchi clan, due to the latter also claiming to have descended from Prince Imseong.（National Diet Library） For the same reason, it is speculated that the Toyoda clan's prevalence in the Yamaguchi Prefecture is because of its similar origin with the Yamaguchi clan of Chūgoku, a cadet branch of the aforementioned Ōuchi clan, and a prominent family that ruled over the area throughout its history.
The clan's descendants in modern days have elevated the clan's name into recognizable titles, such as the Toyota Group founded by Sakichi Toyoda of the Toyoda family.
Due to the influence of the Toyoda family, the city that the group is based in changed its name to "Toyota city (豊田市)" from the original "Kuromo city (挙母市)" on January 1, 1959.
See also
Japanese clans § Immigrant clans: List of Toraijin clans of different origins. Hata clan Yamato no Aya clan Tatara clan Ōtomo clan Ōuchi clan
References