Asō Domain

Asō Domain (麻生藩, Asō-han^?) was a feudal domain under the Tokugawa shogunate of Edo period Japan, located in Hitachi Province (modern-day Ibaraki Prefecture), Japan. It was centered on Asō Jin'ya in what is now the city of Namegata, Ibaraki. It was ruled for all of its history by the Shinjō clan.

Shinjō Naoyori, a retainer of Toyotomi Hideyoshi and lord of Takatsuki Domain in Settsu Province sided with the losing western forces in the Battle of Sekigahara in 1601, and was deprived of his lands. However, in 1604, after pledging his fealty to Tokugawa Ieyasu, he was restored to a 33,000 koku holding spanning eight districts of Hitachi and Shimotsuke Provinces, centered at Asō.

His son, Shinjō Naosada, divided the domain by giving 3000 koku to his younger brother Naofusa. The 5th daimyo, Shinjō Naonori succeeded as an infant, and the domain continued to be run by his retired father, the 4th daimyo Shinjō Naotoki, who had established himself at a subsidiary 7000 koku holding in Kashima District. However, when Shinjō Naonori died at age 17 without an heir, the domain was suppressed by the Tokugawa shogunate. Shinjō Naotoki successfully petitioned the Shogun for its restoration later the same year, but was given only 3000 koku of hatamoto lands to add to his existing 7000 koku.

...
Wikipedia