The next chapel off the right hand aisle was built by Pope St Paschal I in the early 9th century to house the tomb of his mother Theodora Episcopa, and to hold the remains of the Early Christian priest, Zeno, and two other martyrs, which he had brought from the Roman catacombs. The actual burials have disappeared from the chapel. Nevertheless, the chapel retains its original floor, and mosaics on the walls and vault.