On the 6th of May 1448 he obtained licence in mortmain and on the 10th of August founded at Oxford "for the extirpation of heresies and errors, the increase of the clerical order and the adornment of holy mother church, a perpetual hall, called Seint Marie Maudeleyn Halle, for study in the sciences of sacred theology and philosophy," to consist of a president and 50 scholars.
The walls of the interior were stripped of their marble panelling by Sigismondo Malatesta in 1449, for the adornment of his church at Rimini.
A law of the republic required every merchant trading to the East to bring back some material for the adornment of the fane.
Already it had been robbed of many of its works of art, among them the Athena Promachos and the Parthenos of Pheidias, for the adornment of Constantinople, and further spoliation took place when the church of St Sophia was built in A.D.
Subsequent popes manifested equal ardour, with the same damaging results, in the repair and adornment of the catacombs, and many of the paintings covering their walls, which have been assigned to the period of their original construction, are really the work of these later times.