Constantine VII (905-959)

Constantine VII Porphyrogennetos or Porphyrogenitus, "the Purple-born" (Greek: Κωνσταντίνος Ζ΄ Πορφυρογέννητος, Kōnstantinos VII Porphyrogennētos), (September 2, 905 – November 9, 959) was the son of the Byzantine emperor Leo VI and his fourth wife Zoe Karbonopsina. He was also the nephew of the Emperor Alexander. He is famous for his four descriptive books, De Administrando Imperio, De Ceremoniis, De Thematibus and Vita Basilii.

His nickname alludes to the Purple Room of the imperial palace, decorated with the stone porphyry, where legitimate children of reigning emperors were normally born. Constantine was also born in this room, although his mother Zoe had not been married to Leo at that time. Nevertheless, the epithet allowed him to underline his position as the legitimized son, as opposed to all others who claimed the throne during his lifetime. Sons born to a reigning Emperor held precedence in the Byzantine line of succession over elder sons not born "in the purple". &nbsp