松平定信
Shirakawa then came under yet another branch of the Matsudaira clan, with the appointment of Matsudaira (Hisamatsu) Tadayoshi. His adopted grandson, Matsudaira Sadanobu was immediately faced with his domain's economically disastrous position: of 110,000 "koku" that it was supposed to be able to produce, 108,600 had been reported "lost". Sadanobu worked ceaselessly to fix the economic situation in Shirakawa, finally saving it and bringing its finances and agriculture back to stability. These reforms, coupled with Sadanobu's continued political maneuvering, brought him fame, and he was named chief councilor of the Shōgunate in the summer of 1787, and regent to the 11th shōgun Tokugawa Ienari early the following year. This period of Sadanobu's strengthening of the already faltering Tokugawa regime is known as the Kansei Reforms. His son, Matsudaira Sadanaga, was transferred to Kuwana Domain.