His Eminence '''John (Zizioulas) of Pergamon''' (b. 1931) is a modern [[theologian]], titular [[Metropolitan]] of Pergamon, under the [[Ecumenical Patriarchate]] of Constantinople. He was [[Consecration of a bishop|consecrated]] as a [[bishop]] on [[June 22]], 1986, and is currently the co-chair of the Catholic-Orthodox dialogue.