Fountain in Piazza Santa Maria in Trastevere mentioned in documents dating to the second half of the 15th century. A drawing of the fountain appears on the map of Rome made by Pietro del Massaio in 1471, along with a description of the legend of the fountain's origin. According to the legend, which appears in the "Chronicle" of Eusebius, translated and finished by Saint Jerome in the fifth century, on the night of the birth of Christ a fountain of oil appeared miraculously in front of the church, which as a result was given the name "Santa Maria in fontibus." The original fountain was supplied with water
Fontana di Piazza Colonna to the foot of the column of Marcus Aurelius. The source of the water for the fountain of Piazza Colonna was only 67 feet above sea level; like the Trevi Fountain, the Fontana della Barcaccia, and the fountains of Piazza Navona, all connected to the Acqua Vergine, the fountain of Piazza Colonna was unable to jet water high into the air. The original project of Della Porta was to place an antique Roman statue of a sea god, called Marforio, in the fountain, against a background of a rocky grotto, behind which the column of Marcus Aurelius would be seen.