Constantine Triantafyllou was born in 1957 at Royal Chalkis in Greece. After completing his basic education, Constantine studied at the Ecclesiastical School of Athens Rizario and Theological School of the University of Athens. Entering the [[Holy Orders]], Constantine was [[ordination|ordained]], in 1983, a [[deacon]] and then a [[priest]] by Metr. Chrysostomos (Verga), receiving the name Chrysostomos.
In 1998, Fr. Chrysostomos received a diploma in the specialized field of Worship, Art, and Archaeology from the Theological Faculty of the Aristotle University of Thessaloniki. On [[December 14]], 2001, Fr. Chrysostomos was elected Metropolitan of the Metropolis of Chalcis, Istiaia, and Sporades.