In 1074, Pope Gregory VII ⓘ convened a reforming council in Rome that issued decisive decrees against simony ⓘ and clerical marriage.1 The assembly formed part of the broader Gregorian Reform ⓘ movement, which sought to purify the Church and strengthen papal authority.

The council declared that anyone advanced to holy orders or ecclesiastical office through the payment of money was to be deprived of the right to officiate. Churches obtained by financial transaction were to be forfeited, and the buying or selling of ecclesiastical office was formally prohibited.

The council also reaffirmed clerical celibacy. Married clergy were forbidden to celebrate Mass or serve at the altar. In a striking measure, the laity were instructed to refuse the ministrations of priests who disobeyed these decrees, so that public shame might compel reform.

These decisions intensified tensions between reforming popes and secular rulers who had long exercised influence over ecclesiastical appointments. The council of 1074 thus marked a critical step toward the later Investiture Controversy ⓘ and the reshaping of medieval Church governance.

• 1. Medieval Sourcebook