Boris I of Bulgaria
Resources
Bulgarian history — Boris I The Ecumenical Patriarchate of Constantinople

Boris I of Bulgaria

Section Title: Resources
Table Section Text: Bulgarian history — Boris I The Ecumenical Patriarchate of Constantinople

Regnal titles

Preceded by Presian I	Knyaz of Bulgaria 852–889	Succeeded by Vladimir

Sentence(s)

In 889 Boris abdicated the throne.

final_sentence: In 889 Boris abdicated the throne.