德川齊昭
was the 7th (and final) "daimyō" of Moriyama Domain. He was the 22nd son of Tokugawa Nariaki of Mito Domain and thus was a half-brother to Shogun Tokugawa Yorinobu, He was adopted as heir to the childless Matsudaira Yorinori in 1869, and the domain was transferred to Matsukawa in Hitachi Province by the Meiji government the same year. He died in 1873, only one year after his adopted father, and the chieftainship of the Moriyama-Matsudaira clan went to Matsudaira Nobunori of Aizu Domain.