A second legend is connected to Christina. The Eucharistic miracle, depicted in Raphael's The Mass at Bolsena, is often considered to be the catalyst for the Feast of Corpus Christi, recalls an event in the Umbrian region of Italy in 1263. A priest named Peter from the city of Prague nurtured doubts regarding the transubstantiation of the Host during Mass, and during his pilgrimage toward Rome prayed to be relieved of his questions.