In the "Nomori no Kagami," which was written at the end of the Kamakura period, it is recorded that this sect was called Ikkoshu, and was a completely different sect from the later Jodo Shinshu sect.
鎌倉時代末期に書かれた『野守鏡』にはこの教団を一向宗と呼んで、後世の浄土真宗とは全く無関係の宗派として存在している事が記録されている。