The
Liber Pontificalis (
Latin for
Book of the Popes) is a book of
biographies of
popes from
Saint Peter until the 15th century. The original publication of the
Liber Pontificalis stopped with
Pope Adrian II (867–872) or
Pope Stephen V (885–891), but it was later supplemented in a different style until
Pope Eugene IV (1431–1447) and then
Pope Pius II (1458–1464). Although quoted virtually uncritically from the 8th to 18th century, the
Liber Pontificalis has undergone intense modern scholarly scrutiny. The work of the French priest
Louis Duchesne (who compiled the major scholarly edition), and of others has highlighted some of the underlying redactional motivations of different sections, though such interests are so disparate and varied as to render improbable one popularizer's claim that it is an "unofficial instrument of pontifical propaganda."