Crescentinus was a Roman soldier from the early 4th century who is recognized as a martyr. Born in Rome, he reportedly fled to the region of Umbria to avoid the persecutions led by Diocletian. He eventually settled in Thifernum Tiberinum, which is known today as Città di Castello. Following his conversion to Christianity, he worked to spread the faith throughout the Tiber Valley. He is honored as a warrior saint and is the patron protector of the city of Urbino.