SIMEONE, archbishop of TESSALONICA. - Byzantine theologian, polemicist, and liturgist, d. at Tessalonica in March 1429. Of his life it is known only that, after having been a monk, he succeeded Metropolitan Gabriele around 1418, and that he died six months before the fall of Tessalonica into the power of the Turks.
Among his writings, the principal ones are a dialogue against all heresies and a treatise on the Holy Rites, or Sacraments. To these two works must be added the pamphlets On the Divine Temple, Exposition of the Symbol, Explanation of the Constantinopolitan Symbol, Treatise on the Priesthood, 83 responses addressed to Gabriele, metropolitan of Pentapolis, and several poems and prayers. S. is to be numbered among the great Byzantine writers. Generally speaking, his Trinitarian, Christological, and sacramental doctrine is profound and sound, except at those points where the polemicist has prevailed over the theologian. S. was in fact an ardent Palamite; he fought against the Latins and, together with Nicolao Cabasila, was the greatest advocate of the Byzantine view concerning the epiclesis as the form of the Most Holy Eucharist.