an Eastern Orthodox church between 532 and 537 CE under the Byzantine emperor Justinian I. For nearly a thousand years it was the largest cathedral in the world, until the completion of Seville Cathedral in the early sixteenth century. Few names can claim to have had a cathedral dedicated to their meaning for fifteen centuries.
The name also carried real historical weight as a personal name across European royalty and aristocracy, appearing among German, Russian, and British
royal families across multiple centuries. That kind of sustained association across elite circles
