The original founder of the mosque, as I have said, was the favourite wife of Ahmed I. This princess is one of the most famous women in Turkish chronicles. Whether she was a Greek or a Turk, history does not confirm, though the custom of the sultans to marry none but slaves would point to the former origin. Her name in the Seraglio was Mahpeïker—Moon Face. She is oftenest remembered, however, by the name Kyössem, Leader of a Flock, from the fact that she was the first of a troop of slaves presented to the young sultan. During his reign she gained an increasing voice in the affairs of the empire, and during those of her sons Mourad IV and Ibrahim her word was law. The position of empress mother is an exceptional one in Turkey, as in China, the occupant of it being the first lady in the palace and the land. She is known as the _valideh soultan_, or princess mother—for the word sultan properly has no sex. Our word sultana does not exist in Turkish, being a Greek or Italian invention. The reigning sultan prefixes the title to his own name, while other persons of his blood put it after theirs. When the grandson of Kyössem, the boy Mehmed IV, came to the throne, the great _valideh_ continued, against all precedent, to inhabit the Seraglio and to exercise her old influence. But at last the jealousy of Mehmed’s mother, defrauded of her natural rank, kindled a palace intrigue that caused the older _valideh_, at the age of eighty, to be strangled one night in the Seraglio. Her mosque, still unfinished, suffered by a fire which ravaged the quarter; and it was finally completed by her young rival, a Russian named Tar’han, or Hadijeh. After the latter the mosque is called to-day the yeni _valideh soultan jamisi_, the mosque of the new empress mother. In common parlance, however, it goes by the name of _yeni jami_, the new mosque—though it has had time to become fairly venerable. And she who became the new _valideh_ in 1649 now occupies the place of honour under the dome of the tomb beside the mosque, while the murdered Kyössem rests near her husband in their little marble house on the Hippodrome.