Tokugawa Ieyasu's burial place, Kunōzan Tōshō-gu Shrine
Death of Ieyasu and Daimyojin
The body of great lord Ieyasu, who passed away in Sumpu Castle on April 17, Genna 2nd (1616), was transported to Kunōzan that same night. Then under Yoshida Shinto rituals conducted by Shinryu-in Bonshun and Sakakibara Teruhisa, he was enshrined as a "Daimyojin" god, and Shogun Tokugawa Hidetada ordered construction of Kunōzan Tōshō-gu Shrine by making Daimyojin architectural style to carpenter's master Nakai Masakiyo.
Praying for the coming of the deity called reburial
After, his posthumous name became not "Daimyojin" but "Daigongen," pushed forth by Tenkai. Then, Ieyasu's will to "Bunshi" (moving the deity to Nikko) was renamed to "Sengu (transition)" or "Kaiso (reburial) to Nikko." However, "Kaiso" in this context was merely a ritual name for Tenkai's Shinbutsu-shūgō (syncretism of kami and buddhas) he was leading.
Ieyasu continues to rest in Kunōzan today
The body of Ieyasu is buried in the mausoleum of Kunōzan Tōshō-gu and it has not been uncovered or transported. This fact can be seen by actually looking and comparing the Nikko Tōshō-gu's Okumiya and Kunōzan Tōshō-gu's Shimbyo (mausoleum). In addition, it is also clear through carefully reading historical documents such as "Shungyuki", "Honkō Kokushi Nikki", and "Tōbu Jitsuroku".
