Vita Basilii in the context of "Basil I"

Constantine VII Porphyrogenitus (Medieval Greek: Κωνσταντῖνος Πορφυρογέννητος, romanized: Kōnstantīnos Porphyrogénnētos; 17 May 905 – 9 November 959) was the fourth Byzantine emperor of the Macedonian dynasty, reigning from 6 June 913 to 9 November 959. He was the son of Emperor Leo VI and his fourth wife, Zoe Karbonopsina, and the nephew of his predecessor Alexander.

Most of his reign was dominated by co-regents: from 913 until 919 he was under the regency of his mother, while from 920 until 945 he shared the throne with Romanos Lekapenos, whose daughter Helena he married, and his sons. Constantine VII is best known for the Geoponika (τά γεωπονικά), an important agronomic treatise compiled during his reign, and three, perhaps four, books; De Administrando Imperio (bearing in Greek the heading Πρὸς τὸν ἴδιον υἱὸν Ῥωμανόν), De Ceremoniis (Περὶ τῆς Βασιλείου Τάξεως), De Thematibus (Περὶ θεμάτων Άνατολῆς καὶ Δύσεως), and Vita Basilii (Βίος Βασιλείου), though his authorship of the Vita Basilii is not certain.

Theophanes Continuatus (Greek: συνεχισταί Θεοφάνους) or Scriptores post Theophanem (Οἱ μετὰ Θεοφάνην, "those after Theophanes") is the Latin name commonly applied to a collection of historical writings preserved in the 11th-century Vat. gr. 167 manuscript. Its name derives from its role as the continuation, covering the years 813–961, of the Chronicle of Theophanes the Confessor, which reaches from 285 to 813. The manuscript consists of four distinct works, in style and form very unlike the annalistic approach of Theophanes.

The first work, of four books consists of a series of biographies of the emperors reigning from 813 to 867 (from Leo the Armenian to Michael III). As they were commissioned by Emperor Constantine VII (r. 913–959), they reflect the point of view of the reigning Macedonian dynasty. The unknown author probably used the same sources as Genesios. The second work is known as the Vita Basilii (Latin for "Life of Basil"), a biography of Basil I the Macedonian (r. 867–886) written by his grandson Constantine VII probably around 950. The work is essentially a panegyric, praising Basil and his reign while vilifying his predecessor, Michael III. The third work is a history of the years 886–948, in form and content very close to the history of Symeon Logothetes, and the final section continues it until 961. It was probably written by Theodore Daphnopates, shortly before 963.