Gregory Tsamblak
Gregory Tsamblak (c. 1365 – c. 1420), member of the Tzamplakon family, was a Bulgarian writer and cleric active in Bulgaria, Moldavia, Serbia, Grand Duchy of Lithuania, and the Principality of Kiev. == Biography == === Early life === He was born into the Tzamplakon family in the Bulgarian capital of Tarnovo around 1364/1365.