decorative program. Paschal hired a team of professional mosaicists to complete the work in the apse, the apsidal arch, and the triumphal arch. In the apse, Jesus is in the center, flanked by Sts. Peter and Paul who present Prassede and Pudenziana to God. On the far left is Paschal, with the square halo of the living, presenting a model of the church as an offering to Jesus. Below runs an inscription of Paschal's, hoping that this offering will be sufficient to secure his place in heaven. On the apsidal arch are twelve men on each side, holding wreaths of victory, welcoming the souls into heaven. Above them are symbols of the four Gospel writers: Mark, the lion; Matthew, the man; Luke, the bull; and John, the eagle, as they surround a lamb on a throne, a symbol of Christ's eventual return to Earth. Those mosaics, as well as those in the Chapel of Saint Zeno, a funerary chapel which Pope Paschal built for his mother, Theodora, are the best-known aspects of the church. Also noteworthy are ancient frescoes. Ascending a spiral staircase, one enters a small room, covered in scaffolding; on the wall is a fresco cycle, dating most likely from the 8th century. The frescoes probably depict the life-cycle of the name saint of the church, Praxedes. Pillar of the Flogging Santa Prassede also houses an alleged segment of the pillar or column upon which Jesus was flogged and tortured before his crucifixion in Jerusalem. The relic is alleged to have been discovered in the early 4th century by Saint Helena (mother of the Roman Emperor Constantine I) who at the age of 80 undertook a pilgrimage to the Holy Land, where she founded churches for Christian worship and rescued relics associated with the crucifixion of Jesus on Calvary. In 1223, Cardinal Giovanni Colonna, as emissary to the holy land in 1223 was said to have obtained this artifact and brought it to Rome. Among these legendary relics retrieved by Helena, which included pieces of the True Cross (now venerated at St. Peter's Basilica with fragments in Santa Croce in Gerusalemme, also in Rome) and wood from the Jesus' crib enshrined at S. Maria Maggiore. These items, including the Santa Prassede pillar, lack indisputable authenticity, due to absence of forensic evidence and the abundance of other objects claimed during the medieval period to have the same historic function.