Yamato kingship in and around the capital in Jimmu tosei (Eastern expedition of the Emperor Jinmu) section of Japanese Mythology was established after a force of local ruling family in Kyushu dynasty had the eastern expedition.
日本神話の神武東征にある畿内のヤマト王権は、九州王朝内の豪族の一派が東征してこれが成立した。