Mine-hime, or Tokugawa Yoshiko, 13th daughter of Shogun Tokugawa Ienari, was the wife of Tokugawa Narinobu, lord of Mito han. Her grandsons included Tokugawa Yoshiatsu, who succeeded Narinobu's successor Tokugawa Nariaki as lord of Mito.
She died on 1853/6/22, by chance the same day as Shogun Tokugawa Ieyoshi. Her posthumous Buddhist name was Hôjuin.
References
Ishin Shiryo, vol 1, 437.