title: The Oak Alexander and the True Location of the „Phoullae Tribe“ in the Long Vita of St Constantine-Cyril
abstract: In 860–861 AD, the brilliant Byzantine intellectual and future Bulgarian and Slavic enlightener St Constantine-Cyril the Philosopher was sent on a diplomatic mission to the Khazar Empire. The main sources about this mission and about the life of Constantine-Cyril in general are two medieval Bulgarian texts: „Long Vita of St Constantine-Cyril“ and „Short Vita of St Constantine-Cyril“ (also known as „Uspenie Kirilovo“). According to the Lives (Vitae), the grand plan of St Constantine-Cyril was to 
journal: Epohi