Tenkai Establishes Kan’eiji at Ueno

Hidetada assigned the Ueno estates of three lords to a new temple project. Tenkai received the land and directed the Tendai foundation under Tokugawa patronage. The abbot’s residence was completed in 1625, the year counted as Kan’eiji’s establishment; the surrounding complex continued to grow over subsequent decades.

The name followed Enryakuji’s example, using the reigning era, Kan’ei, with court permission. Its mountain name Tōeizan meant “Mount Hiei of the East.” The temple’s own history explains its position northeast of Edo Castle as a counterpart to Enryakuji’s protection of Kyoto’s northeast. That model describes the foundation’s protective religious role.

Princely abbots and shogunal burial precincts developed later. A son of Emperor Go-Mizunoo became abbot, linking the temple to the court, while Iemitsu’s successors commissioned their funerary precincts there. Kan’eiji began as a prayer temple; its later buildings and burial functions enlarged the institution beyond the initial residence and foundation.