In The sack of Constantinople in 1453 (Part 2) I gave the Riggs translation of the relevant passages, which seemed rather different.  It looked to me as if the source for the online passage was an English translation by Halliday of a book by Guerdan. When the orgy of killing had spent itself, rape took its place. Here is an extract from Critobulus, the Christian renegade who had entered the Sultan’s service.

‘Nothing will ever equal the horror of this harrowing and terrible spectacle. People frightened by the shouting ran out of their houses and were cut down by the sword before they knew what was happening. And some were massacred in their houses where they tried to hide, and some in churches where they sought refuge. The enraged Turkish soldiers . . . gave no quarter.

When they had massacred and there was no longer any resistance they were intent on pillage and roamed through the town stealing, disrobing, pillaging, killing, raping, taking captive men, women, children, old men, young men, monks, priests, people of all sorts and conditions . . . there were virgins who awoke from troubled sleep to find those brigands standing over them with bloody hands and faces full of abject fury.

This medley of all nations, these frantic brutes stormed into their houses, seized them, dragged them, tore them, forced them, dishonoured them, raped them at the crossroads and made them submit to the most terrible outrages. It is even said that at the mere sight of those savages many girls were so stupefied that they almost gave up the ghost. Old men of venerable appearance were dragged by their white hair and piteously beaten, and beautiful children of noble family were carried off.

Priests were led into captivity in batches as well as reverend virgins, hermits and recluses who were dedicated to God alone and lived only for Him to whom they sacrificed themselves, who were dragged from their cells and others from the churches in which they had sought refuge, in spite of their weeping and sobs and their emaciated cheeks, to be made objects of scorn before being struck down.

Tender children were brutally snatched from their mothers’ breasts and girls were pitilessly given up to strange and horrible unions and a thousand other terrible things happened.’ With senses satisfied the Turks gave themselves up to pillage. Shops, houses, palaces, churches—nothing was spared. Let us turn again to Critobulus.