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  • Died: 1752
  • Other Names: Okiya-no-kata, Teruko, Sakyô-no-tsubone
  • Japanese: 月光院 (Gekkou-in)

Gekkô-in was a daughter of Shôda Gentetsu Akinori, consort of Shogun Tokugawa Ienobu, and mother of Shogun Tokugawa Ietsugu.

She was the third of Ienobu's concubines to give him a son, after Okomu no kata and Osume no kata. However, these two previous boys died at the ages of two months and two years, respectively. Gekkô-in's son Nabematsu survived to be named shogun at the age of three, upon Ienobu's death in 1712.


  • Arai Hakuseki, Joyce Ackroyd (trans.), Told Round a Brushwood Fire, University of Tokyo Press (1979), 315n94.
  • Cecilia Segawa Seigle, “Tokugawa Tsunayoshi and the Formation of Edo Castle Rituals of Giving,” in Martha Chaiklin (ed.), Mediated by Gifts: Politics and Society in Japan 1350-1850, Brill (2017), 126, 136.