Constantelos (July 27, 1927 – January 10, 2017) was a researcher in Byzantology and a professor emeritus of history and religious studies at Stockton University, Pomona, NJ.
He was born in Spilia, Messenia, Greece.
He was ordained a priest of the Greek Orthodox Archdiocese of America in 1955 and earned a PhD in Byzantine Civilization at Rutgers University in 1965.He died on 10 January 2017, at the age of 89.