It was an offer designed to be refused and it duly was. Constantine had his own awareness of the obligations of history and stood in the shoes of his father. When the Ottomans were at the gates in 1397 Manuel II had been heard to murmur: “Lord Jesus Christ, let it not come to pass that the great multitude of Christian people should hear it said that it was in the days of the Emperor Manuel that the City, with all its sacred and venerable monuments of the Faith, was delivered to the infidel.” In this spirit, the emperor would fight to the last.

