 The Palace was constructed during the late 13th or early 14th centuries as part of the Blachernae palace complex, where the Theodosian Walls join with the later walls of the suburb of Blachernae.Although the palace appears at first glance to be named after the 10th-century emperor Constantine VII Porphyrogenitus, it was built long after his time, and is in fact named after Constantine Palaiologos, a son of the Emperor Michael VIII Palaiologos.