Concordat of Worms (1122): Ending the Investiture Controversy

The Concordat of Worms, agreed on 23 September 1122 outside the city of Worms on the Rhine, ended half a century of conflict between the popes and the German emperors known as the Investiture Controversy. Emperor Henry V and Pope Callixtus II agreed that bishops would receive their spiritual authority from the Church but their lands and political rights from the ruler. The compromise shaped relations between church and state in Europe for centuries.

Background: who appoints bishops?

In the eleventh century bishops and abbots were not only spiritual leaders but also great landowners and royal officials. Kings and emperors chose them and invested them with a ring and a pastoral staff (crozier), symbols of their sacred office. Church reformers, many inspired by the monastic reform of Cluny, condemned this as lay interference and often as simony, the buying of church offices.

Pope Gregory VII forbade lay investiture in 1075, triggering a bitter conflict with Emperor Henry IV. Henry was excommunicated, famously did penance at Canossa in 1077, and later drove Gregory from Rome. Rival popes and anti-kings, civil war in Germany and repeated excommunications followed.

Failed attempts

Henry IV’s son, Henry V, rebelled against his father and became sole ruler in 1106, but continued to insist on investiture. In 1111 Pope Paschal II proposed a radical solution: churches would give up all lands and rights held from the crown in return for the end of lay investiture. German bishops and princes rejected it. Henry seized the pope and forced him to grant the right of investiture, a concession the reform party revoked in 1112.

Meanwhile England and France reached compromises. In 1107 Henry I of England and Archbishop Anselm agreed that the king would give up investiture with ring and staff while still receiving homage from bishops for their lands. Scholars such as Ivo of Chartres developed a distinction between spiritual office and temporal property that made a similar settlement possible in the empire.

The agreement

Pope Callixtus II, elected in 1119, was a Burgundian noble related to the emperor. After further failed talks, his legates, led by Cardinal Lambert of Ostia, met Henry V and the German princes at Worms. On 23 September 1122 two documents were exchanged and read out on a meadow near the city.

In the imperial charter, Henry renounced investiture with ring and staff, guaranteed free canonical election and consecration throughout the empire, and promised to restore church property taken during the conflict. In the papal privilege, Callixtus allowed bishops and abbots in Germany to be elected in the emperor’s presence, without simony or violence. In disputed elections the emperor could support the “sounder party” with the advice of the bishops. The person elected would receive the regalia, the secular rights and lands, from the emperor by touch of a sceptre before consecration in Germany, and within six months afterwards in Italy and Burgundy.

Consequences

The First Lateran Council confirmed the settlement in 1123. Henry V died in 1125 without a son. The papacy emerged with greater prestige and authority over the Church, while the German emperors kept substantial influence over the selection of bishops, who became powerful territorial princes. Some historians note that the papal concessions were addressed to Henry personally, and later popes and emperors argued over their scope. Conflicts between church and crown continued, as the murder of Thomas Becket in England later showed.

Key people

• Henry V (r. 1106–1125): Salian emperor who had resisted the reform papacy for sixteen years before agreeing to compromise. He was the husband of Matilda, daughter of Henry I of England.
• Callixtus II (pope 1119–1124): born Guy of Burgundy, formerly Archbishop of Vienne, a committed reformer who nevertheless pursued a negotiated settlement.
• Lambert of Ostia: the cardinal-bishop who led the papal delegation at Worms and later became Pope Honorius II (1124–1130).
• The German princes: secular and church lords who pressed both sides to settle, eager to end decades of disorder in the empire.

What changed and what did not

The Concordat did not end royal influence over bishops. In practice German kings remained present at many elections and could steer the choice. What changed was the symbolism and the principle: a bishop’s spiritual authority was now understood to come from the Church alone, while his lands and political powers came from the ruler. This distinction between the spiritual (spiritualia) and the temporal (temporalia) became a basic idea of medieval political thought.

Timeline

• 1075: Gregory VII forbids lay investiture.
• 1077, January: Henry IV does penance at Canossa.
• 1107: Compromise between Henry I of England and Anselm.
• 1111: Henry V seizes Pope Paschal II and extracts investiture rights.
• 1119: Callixtus II becomes pope.
• 1122, 23 September: The Concordat is agreed near Worms.
• 1123, March: The First Lateran Council confirms it.
• 1125: Henry V dies.

Why it matters

The Concordat of Worms drew a lasting line between spiritual and secular authority and set it out in one of the clearest formal agreements of medieval Europe. Its model of compromise influenced later concordats between the papacy and states, and it helped shape the European idea that church and state are separate powers.