John VI Kantakouzenos or Cantacuzenus (Greek: Ἰωάννης ΣΤʹ Καντακουζηνός, Iōannēs VI Kantakouzēnos) (c. 1292 – 15 June 1383) was the Byzantine emperor from 1347 to 1354.
Read more about John VI Kantakouzenos: Early Life, Reign, Retirement As A Monk, Writings, Family