Joseph Bryennios

Joseph Bryennios (Ἰωσήφ Βρυέννιος; 1350 – 1431/38)) was a learned Byzantine monk of the 15th century. He was a monk at the Monastery of Stoudios. He wrote many important works of scholarship in support of Orthodoxy, and against the Union of Churches. He died sometime between 1431 and 1438.