Saint Vigilius was a Christian bishop and martyr, known for his missionary work in the region of Trentino in northern Italy. He is believed to have lived during the 4th century and is often associated with the spread of Christianity in the area. His feast day is celebrated on June 26. Vigilius is recognized for his efforts in converting the local population to Christianity and is considered the patron saint of Trento. He is often depicted in art holding a cross or a book, symbolizing his role as a spiritual leader and educator in the faith.