The emperor Constantine IX and the Pope Leo IX were allied through the mediation of the Lombard catepan of Italy, Argyrus, who had spent years in Constantinople, originally as a political prisoner.
Kaisar Konstantinus IX dan Paus Leo IX menjalin persekutuan melalui mediasi Argyrus, Katepan Italia berkebangsaan Lombardia, yang pernah tinggal bertahun-tahun di Konstantinopel, awalnya sebagai tawanan politik.