Anders Winroth taught medieval history at Yale University from 1998–2020, and currently teaches at the University of Oslo. The author of The Making of Gratian's 'Decretum,' (Cambridge University Press, 2000) which revolutionized our understanding of medieval canon law, he was a named a MacArthur Foundation Fellow in 2003. He serves as President of the Institute of Medieval Canon Law. John C. Wei holds a Ph.D. in medieval history from Yale University and a J.D. from Yale Law School. He is the author of Gratian the Theologian (2016) and the editor of the decretist Reverentia sacrorum canonum. He has authored many articles on medieval law and theology.

'… will do much to orient medieval and legal historians to some of the particularities of the innovative, dynamic, and influential legal system formed over time in the church of the Middle Ages.' Atria A. Larson, Speculum

• 1. Medieval canon law: introduction John C. Wei and Anders Winroth; Part I. The History of Medieval Canon Law: 2. The early church Caroline Humfress; 3. Early medieval canon law Abigail Firey; 4. Canon law in the long tenth century, 900–1050 Greta Austin; 5. The age of reforms: canon law in the century before Gratian Christof Rolker; 6. The reinvention of canon law in the high middle ages Wolfgang P. Mueller; 7. Canon law in a time of renewal, 1130–1234 Anders Winroth; 8. The late middle ages: introduction; four remarks regarding the present state of research Martin Bertram; 9. The late middle ages: sources Andreas Meyer; 10. The canon law of the Eastern churches Péter Erdő; Part II. The Sources and Dissemination of Medieval Canon Law: 11. Theology and the theological sources of canon law John C. Wei; 12. Church councils Norman Tanner; 13. Decretals and lawmaking Gisela Drossbach; 14. Roman law Gero Dolezalek; 15. Law schools and legal education Anders Winroth; 16. Local knowledge of canon law, c. 1150–1250 Anthony Perron; 17. Medieval canon law manuscripts and early printed books Susan L'Engle; Part III. Doctrine and Society: 18. Procedures and courts Wolfgang P. Mueller; 19. Ecclesiastical property, tithes, spiritualia Charles de Miramon; 20. The law of benefices Andreas Meyer; 21. Religious life Elizabeth Makowski; 22. The sacraments of baptism, confirmation, and the Eucharist Thomas M. Izbicki; 23. Confession, penance, and extreme unction Rob Meens; 24. Saints and relics Thomas Wetzstein; 25. Marriage: law and practice Sara McDougall; 26. Family law Franck Roumy; 27. Criminal law Lotte Kéry; 28. Ecclesiastical discipline: heresy, magic, and superstition Edward Peters; 29. Wars and crusades Frederick Russell and Ryan Greenwood; 30. Excommunication and interdict Peter G. Clarke; Conclusion; 31. The spirit of canon law Peter Landau; 32. Bibliography of primary sources Thomas Izbicki and Anders Winroth.

Anders Winroth taught medieval history at Yale University from 1998–2020, and currently teaches at the University of Oslo. The author of The Making of Gratian's 'Decretum,' (Cambridge University Press, 2000) which revolutionized our understanding of medieval canon law, he was a named a MacArthur Foundation Fellow in 2003. He serves as President of the Institute of Medieval Canon Law. John C. Wei holds a Ph.D. in medieval history from Yale University and a J.D. from Yale Law School. He is the author of Gratian the Theologian (2016) and the editor of the decretist Reverentia sacrorum canonum. He has authored many articles on medieval law and theology.

'… will do much to orient medieval and legal historians to some of the particularities of the innovative, dynamic, and influential legal system formed over time in the church of the Middle Ages.' Atria A. Larson, Speculum

• 1. Medieval canon law: introduction John C. Wei and Anders Winroth; Part I. The History of Medieval Canon Law: 2. The early church Caroline Humfress; 3. Early medieval canon law Abigail Firey; 4. Canon law in the long tenth century, 900–1050 Greta Austin; 5. The age of reforms: canon law in the century before Gratian Christof Rolker; 6. The reinvention of canon law in the high middle ages Wolfgang P. Mueller; 7. Canon law in a time of renewal, 1130–1234 Anders Winroth; 8. The late middle ages: introduction; four remarks regarding the present state of research Martin Bertram; 9. The late middle ages: sources Andreas Meyer; 10. The canon law of the Eastern churches Péter Erdő; Part II. The Sources and Dissemination of Medieval Canon Law: 11. Theology and the theological sources of canon law John C. Wei; 12. Church councils Norman Tanner; 13. Decretals and lawmaking Gisela Drossbach; 14. Roman law Gero Dolezalek; 15. Law schools and legal education Anders Winroth; 16. Local knowledge of canon law, c. 1150–1250 Anthony Perron; 17. Medieval canon law manuscripts and early printed books Susan L'Engle; Part III. Doctrine and Society: 18. Procedures and courts Wolfgang P. Mueller; 19. Ecclesiastical property, tithes, spiritualia Charles de Miramon; 20. The law of benefices Andreas Meyer; 21. Religious life Elizabeth Makowski; 22. The sacraments of baptism, confirmation, and the Eucharist Thomas M. Izbicki; 23. Confession, penance, and extreme unction Rob Meens; 24. Saints and relics Thomas Wetzstein; 25. Marriage: law and practice Sara McDougall; 26. Family law Franck Roumy; 27. Criminal law Lotte Kéry; 28. Ecclesiastical discipline: heresy, magic, and superstition Edward Peters; 29. Wars and crusades Frederick Russell and Ryan Greenwood; 30. Excommunication and interdict Peter G. Clarke; Conclusion; 31. The spirit of canon law Peter Landau; 32. Bibliography of primary sources Thomas Izbicki and Anders Winroth.

Anders Winroth taught medieval history at Yale University from 1998–2020, and currently teaches at the University of Oslo. The author of The Making of Gratian's 'Decretum,' (Cambridge University Press, 2000) which revolutionized our understanding of medieval canon law, he was a named a MacArthur Foundation Fellow in 2003. He serves as President of the Institute of Medieval Canon Law. John C. Wei holds a Ph.D. in medieval history from Yale University and a J.D. from Yale Law School. He is the author of Gratian the Theologian (2016) and the editor of the decretist Reverentia sacrorum canonum. He has authored many articles on medieval law and theology.

'… will do much to orient medieval and legal historians to some of the particularities of the innovative, dynamic, and influential legal system formed over time in the church of the Middle Ages.' Atria A. Larson, Speculum

• 1. Medieval canon law: introduction John C. Wei and Anders Winroth; Part I. The History of Medieval Canon Law: 2. The early church Caroline Humfress; 3. Early medieval canon law Abigail Firey; 4. Canon law in the long tenth century, 900–1050 Greta Austin; 5. The age of reforms: canon law in the century before Gratian Christof Rolker; 6. The reinvention of canon law in the high middle ages Wolfgang P. Mueller; 7. Canon law in a time of renewal, 1130–1234 Anders Winroth; 8. The late middle ages: introduction; four remarks regarding the present state of research Martin Bertram; 9. The late middle ages: sources Andreas Meyer; 10. The canon law of the Eastern churches Péter Erdő; Part II. The Sources and Dissemination of Medieval Canon Law: 11. Theology and the theological sources of canon law John C. Wei; 12. Church councils Norman Tanner; 13. Decretals and lawmaking Gisela Drossbach; 14. Roman law Gero Dolezalek; 15. Law schools and legal education Anders Winroth; 16. Local knowledge of canon law, c. 1150–1250 Anthony Perron; 17. Medieval canon law manuscripts and early printed books Susan L'Engle; Part III. Doctrine and Society: 18. Procedures and courts Wolfgang P. Mueller; 19. Ecclesiastical property, tithes, spiritualia Charles de Miramon; 20. The law of benefices Andreas Meyer; 21. Religious life Elizabeth Makowski; 22. The sacraments of baptism, confirmation, and the Eucharist Thomas M. Izbicki; 23. Confession, penance, and extreme unction Rob Meens; 24. Saints and relics Thomas Wetzstein; 25. Marriage: law and practice Sara McDougall; 26. Family law Franck Roumy; 27. Criminal law Lotte Kéry; 28. Ecclesiastical discipline: heresy, magic, and superstition Edward Peters; 29. Wars and crusades Frederick Russell and Ryan Greenwood; 30. Excommunication and interdict Peter G. Clarke; Conclusion; 31. The spirit of canon law Peter Landau; 32. Bibliography of primary sources Thomas Izbicki and Anders Winroth.