“Una cum capite suo”: the Relations between the Pope and the Council from the 4th to the 9th Century
“Una cum capite suo”: the Relations between the Pope and the Council from the 4th to the 9th Century

Summary/Abstract: During the centuries of the ius antiquum, the history of the ecumenical council and the establishment of the criteria of ecumenicity intertwines with the relational dynamics that connect the bishop of Rome, the conciliar institution and the emperor. This research work seeks to highlight the important moments that have determined the establishment of the role of the pope in the Ecumenical Council: that is, it seeks to find the most ancient roots of the expression: “una cum capite suo, et numquam sine hoc capite” which is still present in the Code of Canon Law in force (can. 336).

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