These articles reflect a common interest in the relationships between canon law and ecclesiastical reform in the 11th and 12th centuries. Many investigate the contribution of two key figures, Humbert, cardinal bishop of Silva Candida, and Pope Gregory VII, after whom the reform movement is named.

Cardinal Humbert of Silva-Candida (d.1061)
Humbert of Silva-Candida and the political concept of "Ecclesia" in the 11th century
Canon Law aspects of the 11th-century Gregorian reform programme
"Simoniaca haeresis" and the problem of orders from Leo IX to Gratian
Gregory VII and the juristic sources of his ideology
11th and early 12th-century canonical collections and the economic policy of Gregory VII
was there a Gregorian reform movement in the 11th century?
the reception of Pope Gregory VII into the Canon Law (1073-1141)
the reception of Pope Gregory VII into the Canon Law (1073-1141), Part II
the "Epistola Widonis", ecclesiastical reform and canonistic enterprise 1049-1141
the Gregorian reform tradition and Pope Alexander III
the perception of Jews in the Canon Law in the period of the first two crusades.