Boris I of Bulgaria

Boris I (also Bogoris), venerated as Saint Boris I (Mihail) the Baptizer (Church Slavonic: Борисъ / Борисъ-Михаилъ, Bulgarian: Борис I / Борис-Михаил; died 2 May 907), was the ruler (knyaz) of the First Bulgarian Empire from 852 to 889. Despite a number of military setbacks, the reign of Boris I was marked with significant events that shaped Bulgarian and European history. With the Christianization of Bulgaria in 864, paganism was abolished.