The shogunate proposed Hiroko's marriage to Tokugawa Tsunatoyo on 1679/6/26, and they were married soon afterward, with Hiroko traveling to Edo with only a few companions, a nurse, and a few hundred guards (but without her parents), as was the custom.
- Arai Hakuseki, Joyce Ackroyd (trans.), Told Round a Brushwood Fire, University of Tokyo Press (1979), 313n60.
- Cecilia Segawa Seigle, "Shinanomiya Tsuneko: Portrait of a Court Lady," in Anne Walthall (ed.), The Human Tradition in Modern Japan, Scholarly Resources, Inc. (2002), 9.
- Segawa Seigle, 12.
- Segawa Seigle, 13.