bulgarian minister bulgarian empire reigns office regent ruler successor headed bulgaria successful campaigns byzantines southern macedonia led significant territorial expansion bulgarian realm ruler financed construction water capital second command held enormous power wealth unusually mentioned ruler inscriptions merits described architect medieval bulgarian historians biography office hereditary title bulgarian empire members tentatively known family order position belonged family indirectly evidenced begun career ruler time son influential noble referred regent ruler appointed office point rule earliest record stone known states ruled youngest son considered young rule regent appointed specified heir eldest son christian byzantines hoped advantage bulgaria instability time caused presence throne broke long lasting peace established byzantine bulgarian treaty initially reaffirmed accession charge bulgarian forces repulsed byzantine invasion proceeded raid byzantine territory campaign captured fortresses near modern modern conquering fortresses bulgarian troops reached defence forces city fled entered negotiations population order persuade fortress opinion war ended continuation peace believes forced concessions bulgaria included incorporation close surroundings time ruler financed construction water fountain donated construction occasion great feast ruler organised gifts nobility source construction hailed alongside god let god appointed ruler live years normally directed ruler case bulgarian empire references person inscription mentions old age time surprise death bulgarian throne passed likely evidenced retained position decisive influence bulgarian court slavic tribe inhabited lower river western near drama rose byzantine rulers inscription mentions large scale bulgarian activity lands bulgarian forces led commander capital garrison head priest inscription damaged unclear supported conflict campaign bulgarian army conquered macedonia including inscription found point disappears sources information date circumstances death assessment legacy biography extraordinary merits development bulgarian state describes architects medieval bulgarian years rise romanian historian similarity role 8th century lands dynasty antarctica named honour place names commission bulgaria features character opera debuted opera erroneously described bulgarian ruler
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