Gennadios (Zervos) was born Tsampicos Zervos on the Island of Rhodes on [[July 8]], 1937. After receiving his basic education on Rhodes he attended the Ecclesiastical School of [[Patmos]], before attending the [[Theological School of Halki]], graduating in 1961 with a degree in Orthodox theology.
Prior to graduating from Halki, Tsampicos took [[monasticism|monastic]]
[[vow]]s, taking the name Gennadios, and was [[ordination|ordained a [[deacon]] on [[April 16]],1960. On [[April 28]], 1963, Gennadios was ordained a [[priest]]. On [[February 12]], 1967, Fr. Gennadios was named General Vicar by the Metropolitan of the Archdiocese of Austria and of the Exarchate of Italy. Later in the year, on April 14, the Ecumenical Patriarch [[Athenagoras I (Spyrou) of Constantinople|Athenagoras]] appointed Fr. Gennadios as the [[Archimandrite]] of the Ecumenical Throne.
During the period 1961 to 1996, Fr. Gennadios served at the Ss Peter and Paul Church of the Greek Orthodox Brotherhood of Naples from which he visited the Orthodox youth in the universities of Italy, celebrating liturgies and preaching. Additionally, he continued at the University of Naples, studying Sociology and Psychology before continuing studies at the Pontifical Theological Faculty of Southern Italy from which he was granted a Doctorate in Theology. His dissertation was titled ''The Contribution of the Ecumenical Patriarchate for the Unity of the Christians''.