The Prince of India
or Why Constantinople Fell - Volume I
The "Prince of India" plays a not inconsiderable role in this context. He is not a real Indian prince, but a Jewish shoemaker who was condemned by God to wander the earth until the end of time.
His wanderings lead him as far as China. From there he returns to Constantinople and is drawn into the romantic relationship of the Turkish heir to the throne with Princess Irene, a relative of the ruler of Constantinople, and the struggle for Constantinople.
Volume I of II.