Cardinal Jean Lemoine
Jean Lemoine
9 min read
French cardinal (c. 1250–1313), renowned canonist and papal legate, he founded the Collège du Cardinal Lemoine in Paris in 1302 to train young clerics from Picardy. Close to Popes Boniface VIII and Clement V, he played a key role at the Roman Curia during the transfer of the papacy to Avignon.
Frequently asked questions
Key Facts
- Born around 1250 in Crécy-en-Ponthieu (Picardy)
- Made cardinal by Pope Boniface VIII in 1294
- Founded the Collège du Cardinal Lemoine in Paris in 1302 for students from Picardy
- Author of the Glossa Ordinaria on the Liber Sextus, a landmark reference work of canon law
- Died in Avignon in 1313, shortly before the definitive establishment of the papacy in Avignon (1309)
Works & Achievements
A legal masterpiece by Jean Lemoine, this gloss comments line by line on the Liber Sextus of Boniface VIII (1298). It became an indispensable reference in the teaching of canon law at all European universities until the sixteenth century.
The founding document by which Jean Lemoine endowed a Parisian college to house poor clerical students from Picardy. This legal and charitable document illustrates the ideal of social advancement through education, a hallmark of the great medieval foundations.
Alongside his major gloss, Jean Lemoine left various commentaries on earlier canonical collections. These legal texts reveal a rigorous mind, intent on reconciling the tradition of the Church Fathers with the practical needs of ecclesiastical governance.
As a papal legate, Jean Lemoine drafted official acts and reports for the Roman Curia, accounting for his missions in France and England. These administrative documents shed light on the complex negotiations between the Holy See and the crowns of northern Europe.
Anecdotes
In 1302, Jean Lemoine founded the Collège du Cardinal Lemoine in Paris to welcome young clerks from the diocese of Arras and Picardy. He endowed the institution generously so that poor students could receive training in theology and canon law, without poverty standing in the way of their education. That college still exists today as the lycée Henri-IV — a living legacy of his patronage, over seven centuries old.
Jean Lemoine was one of the leading canonists of his time: he wrote a celebrated gloss on the *Liber Sextus*, the collection of decretals promulgated by Boniface VIII in 1298. This dense and precise legal commentary was studied at universities across Europe for two centuries. Thanks to his work, the rules governing the Church were better understood and more consistently applied by ecclesiastical judges.
During the violent conflict between Boniface VIII and Philip IV the Fair, Jean Lemoine found himself at the center of a major political crisis. In 1303, Guillaume de Nogaret, an envoy of the king, publicly humiliated the pope at Anagni — an act of breathtaking brutality for the era. Loyal to the curia, Jean Lemoine witnessed the pontiff's distress firsthand and worked to restore papal authority in the aftermath of this defining trauma.
Appointed as a papal legate, Jean Lemoine was dispatched on diplomatic missions to France and England to represent the interests of the Holy See. These legations granted him exceptional authority: he could settle disputes, lift excommunications, and convene local councils. This role as a travelling ambassador reflects the absolute trust placed in him by popes Boniface VIII and then Clement V.
Jean Lemoine witnessed the transfer of the papacy to Avignon under Clement V in 1309, an event that shook Christendom and whose consequences lasted until 1377. He spent his final years in that city of the Comtat Venaissin, where he died in 1313. His memory is lastingly honored by the Parisian college he had founded, which continues to educate generation after generation of students.
Primary Sources
Ego Joannes, miseratione divina tituli Sanctorum Marcellini et Petri presbyter cardinalis, volens pauperibus scholaribus de diocesi Atrebatensi et aliis in theologia et jure canonico studentibus providere, collegium in civitate Parisiensi instituo et perpetuis temporibus dotandum statuo.
Joannes Monachus, cardinalis, hunc textum interpretans, docet quod auctoritas papalis in rebus spiritualibus suprema est, et quod canones a Sede Apostolica promulgati vim legis universalis obtinent in tota Ecclesia.
Bonifacius episcopus, servus servorum Dei, dilecto filio nostro Joanni, presbytero cardinali tituli Sanctorum Marcellini et Petri, viro in jure canonico peritissimo et fidei apostolicae devotissimo, salutem et apostolicam benedictionem.
Rex pacificus gloriosus... Statuimus ut qui semel in jure succubuerit, eodem judicio amplius non audiatur. This canon is extensively commented upon by Jean Lemoine regarding its application in benefice cases and appeals to the Roman Curia.
Key Places
Presumed birthplace of Jean Lemoine, in Picardy. It is from this region that he drew his attachment to the dioceses of northern France, and it is for his fellow Picards that he founded and endowed his Parisian college.
Founded in 1302 on rue du Cardinal-Lemoine (in the current 5th arrondissement), this college welcomed scholarship students from Picardy studying at the University of Paris. Its name survives in the Latin Quarter, and its memory lives on in the neighboring lycée Henri-IV.
Jean Lemoine spent a large part of his career in the service of popes Boniface VIII and Clement V, participating in consistories and canonical reforms. It is here that he drafted most of his legal work and exercised his influence over the governance of the Church.
Jean Lemoine followed the papacy when it relocated to Avignon in 1309 and spent his final years there. He died there in 1313, leaving a lasting mark on the pontifical curia during the first Avignon period.
Jean Lemoine was close to the pontifical court during the dramatic “Outrage of Anagni” in 1303, when the envoys of Philip the Fair violated the person of Boniface VIII. This traumatic episode marked a turning point in the relations between the papacy and the monarchies of Europe.
