Shinpan (daimyo)

The shinpan (親藩^?) daimyōs were lords who were certain relatives of the Tokugawa shoguns of Japan. While all shinpan were relatives of the shogun, not all relatives of the shogun were shinpan; an example of this is the Matsudaira clan of the Okutono Domain. Non-daimyo relatives, such as the Gosankyō, were also known as kamon – thus the shinpan lords were alternatively known as kamon daimyō (家門大名). Shinpan included the Gosanke, the Matsudaira clan of Aizu and the Matsudaira clan of the Fukui Domain.

...
Wikipedia