According to the "Liber Pontificalis", it was Alexander I who inserted the narration of the Last Supper (the "Qui pridie") into the liturgy of the Mass. However, the article on Saint Alexander I in the 1907 "Catholic Encyclopedia", written by Thomas Shahan, judges this tradition to be inaccurate, a view shared by both Catholic and non-Catholic experts. It is viewed as a product of the agenda of "Liber Pontificalis"—this section of the book was probably written in the late 5th century—to show an ancient pattern of the earliest bishops of Rome ruling the church by papal decree.