Daitetsu Sōrei

Daitetsu Sōrei (大徹宗令, 1333–1408, also rendered Daisetsu Sōrei or Daitetsu Sōryō) was one of Gasan Jōseki's five great heirs (*Gasan-go-tetsu*) and the founder of Denpōan (伝法庵), one of the five sub-temples (Goin) of Sōji-ji whose abbots rotated as the head-temple priest. He held Sōji-ji's abbatial office in the decades following Gasan's death, helping stabilise the institution during the early Muromachi period when the Ashikaga shogunate's patronage of Rinzai's Five Mountains put significant competitive pressure on Sōtō^[1]. The earlier date attribution "d. 1386" found in some derivative sources appears to be a confusion with his fellow Gotetsu Mutan Sokan (d. 1387); the consistent date in Japanese Sōtōshū sources is 1333–1408.

As the founder of Denpōan — one of the five permanent Goin sub-temples of the Sōji-ji precinct — Daitetsu contributed to the institutional architecture that allowed Gasan Jōseki's five great heirs to collectively administer the head temple rather than compete for sole control. This rotating-abbacy arrangement, shared with his fellow Gotetsu Tsūgen Jakurei, Jippō Ryōshū, Mutan Sokan, and Mugai Enshō, was a key institutional innovation of early medieval Sōtō and one of the reasons Sōji-ji became the dominant head temple of the school in the fourteenth and fifteenth centuries^[1].