The priest Noin was related by marriage to Sei Shonagon (one of his sisters was a wife of TACHIBANA no Norinaga, a son of Sei Shonagon), and seemed to have something to do with handing down the manuscript.
清少納言と姻戚関係にあった能因法師（姉妹の一人が清少納言の実子・橘則長の室）が伝来に関係したとされる系統。