Career
Originally a notary and nomophylax at the Patriarchate of Constantinople, his opposition to the Union saw him exiled to the Despotate of the Morea, where he also died. John participated briefly in the Council of Florence that ratified the Union, and also travelled to Trebizond and Mesembria. John Eugenikos was a prolific writer, from polemical writings attacking the Union to rhetorical ekphraseis and monodies, prayers, hymns and sermons, including an ekphrasis of Trebizond and a lament on the Fall of Constantinople.
36 of his letters also survive, but most of his corpus remains unpublished.