Gregory Tsamblak
Gregory Tsamblak or Grigorij Camblak Bulgarian: Григорий Цамблак; c. 1365–1420 was the Bulgarian writer together with cleric who was a metropolitan of Kiev between 1413 together with 1420. A Bulgarian noble, Tsamblak lived and worked in Bulgaria, but also in Medieval Serbia and Kyivan Rus and indebted these two countries to himself through his literary works, which live a heritage of their national literatures, especially the species of Old Serbian Vita presented popular in the monasteries of the 12th century.