The Kobayakawa clan was a samurai

Samurai

is the term for the military nobility of pre-industrial Japan. According to translator William Scott Wilson: "In Chinese, the character 侍 was originally a verb meaning to wait upon or accompany a person in the upper ranks of society, and this is also true of the original term in Japanese, saburau...

 clan of Japan's Sengoku period

Sengoku period

The or Warring States period in Japanese history was a time of social upheaval, political intrigue, and nearly constant military conflict that lasted roughly from the middle of the 15th century to the beginning of the 17th century. The name "Sengoku" was adopted by Japanese historians in reference...

, whose holdings were in Kyūshū

Kyushu

is the third largest island of Japan and most southwesterly of its four main islands. Its alternate ancient names include , , and . The historical regional name is referred to Kyushu and its surrounding islands....

, the southernmost of Japan's main islands. Members of the Kobayakawa family served under the Mōri clan

Mori clan

The Mōri clan was a family of daimyō, descended from Ōe no Hiromoto and established themselves in Aki Province. Their name was derived from a shōen in Mōri, Aikō District, Sagami Province. The generation of Hiromoto began to name themselves Mōri.After the Jōkyū War, Mōri was appointed to the jitō...

, and Toyotomi Hideyoshi

Toyotomi Hideyoshi

was a daimyo warrior, general and politician of the Sengoku period. He unified the political factions of Japan. He succeeded his former liege lord, Oda Nobunaga, and brought an end to the Sengoku period. The period of his rule is often called the Momoyama period, named after Hideyoshi's castle...

. Close allies with the Kikkawa family

Kikkawa family

The Kikkawa family was a samurai clan of Japan's Sengoku period. The most famous member of the clan is likely Kikkawa Motoharu , one of Toyotomi Hideyoshi's generals, who was adopted into the family...

, the Kobayakawa fought alongside the Kikkawa, Mōri, Toyotomi, and Ōtomo clan

Otomo clan

The Ōtomo clan was a Japanese clan whose power stretched from the Kamakura period through the Sengoku period, spanning over 400 years. The clan's hereditary lands lay in Kyūshū....

s against the Shimazu

Shimazu family

The were the daimyō of the Satsuma han, which spread over Satsuma, Ōsumi and Hyūga provinces in Japan.The Shimazu were identified as one of the tozama or outsider daimyō clans in contrast with the fudai or insider clans which were hereditary vassals or allies of the Tokugawa clan,The Shimazu were...

, for control of Kyūshū at the end of the 16th century; they were awarded Chikuzen province

Chikuzen Province

was an old province of Japan in the area that is today part of Fukuoka Prefecture in Kyūshū. It was sometimes called , with Chikugo Province. Chikuzen bordered Buzen, Bungo, Chikugo, and Hizen Provinces....

as their fief following the Shimazu's defeat, but the clan came to an end only a few decades later when Hideaki died without a successor.