Shimazu and Mouri were transferred from east to west, and Sozui Ise was transferred from west to ...

Many of the families that gained fame as the leading feudal lords of the Sengoku period were upstarts, but there were also many cases in which prestigious gokenins(vassals) from the Kamakura shogunate and bureaucrats from the Muromachi shogunate were transferred and became kokujin(local lords). Even though Japan became a world of social upheaval, famous families and established families continued to take advantage of the authority of the Imperial Court by receiving official ranks and calling themselves clans (Gen-pei-Toh-Kitsu：源平藤橘), and sometimes by modifying their family trees to legitimize their own families. The consistency of history has been largely guaranteed under the imperial system.

Shimadzu Manor began with a donation to Yorimichi Fujiwara and gradually expanded in size, becoming the largest manor in Japan, spanning the three provinces of Satsuma, Osumi, and Hyuga. Tadahisa Koremune was working for the Konoe family, the direct line of the Sekkan family, and was also a Kamakura gokenin(vassal). He was appointed by Yoritomo as the shokan(locan governor) of the sho(manor) and took the name ``Shimadzu'' from the manor. The 4th generation, Tadamune, was actually assigned to the area, and the 5th generation, Sadahisa, sided with Emperor GoDaigo when he raised an army and attacked Chinzei Tandai(Kamakura Shogunate representative in Kyushu). It was a natural move for the Shimazu family, as the right to govern the three provinces received from Yoritomo had been taken over by the Hojo Tokuso family and confined to the Satsuma province after the Hiki War. The Koremune clan was originally from the Hata clan and was a naturalized family, but the Shimazu family later called itself the Seiwa-Genji, with Tadahisa as Yoritomo's son. His mother was Tango Tsubone (the daughter of Yoritomo's wet nurse Hiki-ni), and she gave birth to Tadahisa with Hirokoto Koremune before marrying Morinaga Adachi, but the father was actually Yoritomo, and she had a relationship with Yoritomo's amorous character. However, it doesn't seem like an unreasonable story at all.

Shimadzu-manor was held by the Sekkan family and then taken over by the Taira family, but at that time the Kimotsuki clan was entrusted with the shokan(local governor) position. He is a descendant of the Otomo clan, a prestigious family from ancient times (the Otomo clan became Tomo after Emperor Junna), and was assigned to Satsuma as a local government official, calling himself Kimotsuke and in charge of the site of a huge manor, but in the wake of the decline of the Heike mentioned above. His position would be taken away by the Shimazu family. To summarize, the rulers changed from Suemoto Taira(Heishi clan) who developed the manor to Kimotsuki clan to Shimazu clan.

The Mori clan was also transferred to Aki as a gokenin, but was originally from Mori-sho in Sagami Province and was a shogun and gokenin in the vicinity of present-day Atsugi City. Hiromoto Oe supported Yoritomo as a civil official, but his family was defeated in the Jokyu War and the Battle of Hoji, and was dispersed throughout Japan. The Kitakoji family and the Mori family have shown their presence in medieval and modern Japanese history.

Other famous examples of Kamakura gokenin being transferred to the west include the Otomo clan (from Otomo-go, Sagami Province to Bungo), the Shoni clan (formerly the Muto clan), and the Ito clan (Tagata District, Izu Province). After the Jokyu War, the scope of control of the shogunate extended to the whole of Japan, and in response to the Mongol invasion, the process of medieval samurai forces moving and relocating and being replaced by a new system of governance, seem a big change

since the establishment of the Yamato Court in the 5-7th century.

Although the times were different, it was the Odawara Hojo clan who was transferred from the west to the east and became a feudal lord during the Sengoku period. Although the era was Muromachi, the Ise clan was the Ise Taira clan, the same line as the family that perished in Dan-no-ura, and the butler of the Muromachi shogunate was hereditary, but Hojo Soun (Moritoki Ise) was from a branch of the Bicchu Ise clan. Honnuki was a Bicchu, but Moritoki was a bureaucrat who served the Shogun family, and went to Suruga to mediate over the issue of succession to the Imagawa family, to which his sister had married. Until just 230 years ago, Hojo Soun was treated as an ordinary ronin, but Dosan Saito was also the same, and I'm looking forward to seeing what was a fixed idea, especially in fiction, in the medieval period, but the reality is gradually becoming clear. hey.

After that, Moritoki successfully succeeded to the headship of the family to Ryuomaru (Imagawa Ujichika), who was born to his sister, and took charge of Kokokuji Castle and invaded Izu and Sagami, but he called himself the Hojo clan. He has never been involved in this position, and now he is in charge of his son, Ujitsuna. In order to claim supremacy in the Kanto Plain, the name ``Hojo'' would have been better, but he did not take the name arbitrarily, but had the approval of the shogunate and the Imperial Court, and his official rank followed the Kamakura Hojo family, and from then on his successors. I received Sakyo Dayu and Sagami no kami. As expected from a family of bureaucrats in Kyoto, he is very well established. Incidentally, the Amago clan who fought with the Mori was also a transferee who moved from Omi to Izumo (shugodai) during the Muromachi period.