Joannes Zonaras

Joannes or John Zonaras (Greek: Ἰωάννης Ζωναρᾶς Iōánnēs Zōnarâs; c. 1070 – c. 1140) was a Byzantine Greek historian, chronicler and theologian who lived in Constantinople (modern-day Istanbul, Turkey). Under Emperor Alexios I Komnenos he held the offices of head justice and private secretary (protasēkrētis) to the emperor, but after Alexios' death, he retired to the monastery on the Island of Hagia Glykeria, (İncir Adası, in the Bay of Tuzla), where he spent the rest of his life writing books.