Kayado Hijiri

Japanese: 萱堂聖 - かやどうひじり

...It is known that Karikaya Doshin and Sekidomaru still preach at this temple, and it is considered to be their former site. Mikkyo-in was the nembutsu hall of Kakuban (Kokkyo Daishi), the founder of the Shingon sect, but the nembutsu saints of Koyasan gathered around it, and a Kayado hall was built at the center, and they were called Kayado saints. The central figure of these Kayado saints in the mid-Kamakura period was Soshin Kakushin (Hotto Kokushi), the founder of the Rinzai sect of the Kokokuji school. ...

From [Koyasan Saint]

...This is the reason why Mount Koya became a sacred site for ossuaries and the national bodhisattva of Japan. At that time, the Koya saints lived on Mount Koya in several groups, but the three most famous were the Renge-doku saints, Kayado saints, and Senju-in saints. The Renge-doku saints were known for their reclusion and their devotion to the path of Buddhism, and made Myohen Sozu (son of Shonagon Shinzei) their idol....

*Some of the terminology explanations that mention "Kayado Hijiri" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…いまも苅萱道心と石童丸の唱導をするので知られ，その旧跡とされている。密厳院は新義真言宗の開祖，覚鑁（かくばん）(興教大師)の念仏堂であったが，そのまわりに念仏の高野聖（ひじり）があつまり，その中心に萱堂（かやんどう）ができて萱堂聖と称せられた。鎌倉時代中期にこの萱堂聖の中心となった人物は，臨済宗興国寺派の祖心地覚心(法灯国師)であった。…