Probus of Rieti was a bishop residing in central Italy during the 6th century. Although historical details regarding his specific actions and life remain sparse, he is recognized as a saint within both the Catholic and Orthodox traditions. His legacy is preserved through the writings of Pope Gregory I, who praised him and recounted the unusual circumstances surrounding his death in 571.
Life and death
Serving as the bishop of Rieti, Probus lived during a period of significant transition in Italy. Very little is documented about his daily ministry or personal history. However, his passing in 571 was noted by Pope Gregory I, who used his death as a subject in a sermon to highlight his character.
Veneration
He has been honored as a saint since ancient times. Both Eastern Orthodox and Roman Catholic Christians include him in their liturgical calendars. His feast day is observed on March 15.