Also nicknamed 'the Macedonian' and founder of the Macedonian dynasty. Born in Thrace c. 830-836. Basil I made his career under Michael III (r. 842-867) and was crowned co-emperor in 866. He became sole emperor a year later when Michael was murdered. Basil's fiscal policy attempted to extend state control over the economy; furthermore he promulgated the Procheiron and Epanagoge. Basil faced rebellions, wars and domestic troubles, including a hostile episode with his heir and son Leo (later Leo VI). Basil also fought wars abroad in the East and Italy; for his alliance with the Pope and Louis II he yielded to Pope Nicholas I and replaced patriarch Photios with Ignatios. Basil met his end in a hunting accident.

Basil restored the cistern in the Palace of Hieria.