Early life and entry into monasticism
He was born Dimitrios Dimitriadis in Smyrna (modern İzmir) in 1846 and studied at the Evangelical School of Smyrna, where he became acquainted with Holy Scripture and the Philokalia. As a young man he sought the monastic life and entered the Monastery of St. Panteleimon on Mount Athos, where he was tonsured a monk and given the name Daniel.
Tensions between Greek and Russian monks during this period led to a season of displacement, including a period away from the Holy Mountain at the Monastery of St. Anastasia Pharmakolytria in Halkidiki. He also spent five years at the Monastery of Vatopaidi before settling permanently in the remote ascetic region of Katounakia.
Katounakia and the Danielite brotherhood
At Katounakia, on the arid, rocky southern tip of the Athos peninsula, Daniel established the Hesychasterion of the Venerable Athonite Fathers. Over time a small brotherhood gathered around him, which became known as the Danielaioi (Danielite) Brotherhood and which remains at Katounakia today.
Daniel guided his community in the study and practice of the Philokalia and the Athonite ascetic tradition. He became known beyond his own brotherhood as a counselor sought out by troubled monks and laypeople, with a reputation for spiritual discernment.
Writings and reputation
Daniel was a prolific writer on spiritual and theological subjects, leaving behind numerous essays and a large body of correspondence, including hundreds of letters. He maintained correspondence with Saint Nektarios of Aegina. His brotherhood also continued the practice of hagiography, an art handed down within the community.
He was esteemed in his own day for the spiritual quality of his writing and counsel.
Repose and veneration
Daniel reposed on the feast of the Nativity of the Theotokos in September 1929, after receiving Holy Communion and the Sacrament of Unction. He had spent roughly fifty years in ascetic struggle at Katounakia.
The Ecumenical Patriarchate of Constantinople formally recognized him among the saints in 2020. His feast is commemorated on September 7.