The main branch of the clan ruled as daimyō of Kōriyama Domain in Yamato Province (150,120 koku) until the Meiji restoration, and was subsequently unbowed with the kazoku peerage title of hakushaku (count).

Yanagisawa Nobutoshi (1548-1614) was the son of Aoki Nobutaka, and member of the Mukawashu, a cadet branch of the Takeda clan descending from Ichijo Tokinobu, and a group of warriors who defended the border.

On August 16, 1582, Ieyasu granted him 72 kan 800 mon (equivalent to approximately 300 koku) of land in Kai province.

His son, Yanagisawa Yoshisato was transferred in 1724 to Yamato-Kōriyama Domain in 1724, where his descendants resided to the abolition of the han system in 1871.

The final daimyō of Yamato-Kōriyama Yanagisawa Yasunobu received the kazoku peerage title of hakushaku (Count).