The first record of Shokon no matsuri is in "Shoki mokuroku," volume 8, under "Onsaijifu-kaijo," in the article, "2nd year of Eien era, November 11th, Shokon no matsuri."
初見は『小記目録』第8巻「御祭事付解除」の「永延二年十月十一日招魂祭時」という記述。