He decorated the apse and both side walls with images in mosaics of processions of martyrs and virgins; indeed he laid over this stucco covered with gold, he stuck multicoloured stones to the side walls and composed a pavement of wonderfully cut marble pieces.  If you look on its façade on the inside you will find the image of Emperor Justinian and Bishop Agnellus decorated with gold mosaics. Nb.  Head of Justinian still survives […]

87 You can see this on the wall: there, as I said, two cities were made.  From Ravenna the martyrs lead forth, on the men’s [south] side, going to Christ; from Classe the virgins proceed, proceeding to the holy Virgin of virgins, and the Magi going before them offering gifts. There is then a long description of what the Magi are wearing and what the colours signify. […].

89 And he reconciled [to orthodoxy] the baptistery of the Church of S. Martin and decorated it with mosaic; but the apse of that church, greatly shaken by an earthquake [in mid-eighth century], fell in ruins in the reign of Archbishop John V the Younger. Afterwards he adorned the buildings of the vault with colours.