Gregorius Decimi Placentini
Martyrological notice
The historical Roman Martyrology commemorates Gregorius Decimi Placentini on 10 January. The source places the commemoration at Aretii, in Tuscia.
Historical martyrology witness · Martyrologium Romanum (Latin historical edition)
Aretii, in Tuscia, Beati Gregorii Decimi, civis Placentini, qui, ex Archidiacono Leodiensi Summus Pontifex renuntiatus, Concilium Lugdunense secundum celebravit, Graecisque ad unitatem fidei receptis, compositis Christianorum dissidiis, Terrae Sanctae recuperatione instituta, de universali Ecclesia, quam sanctissime gubernavit, optime meritus est.