Manuel II Palaiologos or Palaeologus (Greek: Μανουήλ ὁ Παλαιολόγος, romanized: Manouēl ho Palaiologos; 27 June 1350 – 21 July 1425) was Byzantine Emperor from 1391 to 1425. Shortly before his death he was tonsured a monk and received the name Matthew. His wife Helena Dragaš saw to it that their sons, John VIII Palaiologos and Constantine XI Palaiologos, become emperors.