J. B. Bury 
History of the Eastern Roman Empire [EPUB ebook] 
From the Fall of Irene to the Accession of Basil I.

John Bagnell Bury (1861 – 1927) was an Irish historian, classical scholar, Medieval Roman historian and philologist. He objected to the label 'Byzantinist’ explicitly in the preface to the 1889 edition of his Later Roman Empire. He held the position of Erasmus Smith’s Professor of Modern History at Trinity College Dublin.