Celtic Studies focuses on the culture, history, and religions of the Celtic peoples.

Gregory earned a Ph.D. in Ireland, specializing in social philosophy and studying the cultural, historical, and spiritual dynamics that have shaped the Celtic world.

In particular, his work focuses on Celtic Christianity, examining its ongoing legacy and its potential to contribute to theological and spiritual revitalization in the post-Christian era.

Additionally, his university teaching in Dublin provided him with firsthand engagement in the transmission and renewal of Celtic traditions, making his work both authentic and spiritually resonant.

Gregory is a member and participates in three contemporary Celtic Christian communities — the Iona Community, the Northumbria Community, and the Community of Hilda & Aidan.

He is also involved with organizations such as the American Irish Historical Society, the Cornwall Cultural Association, and the Celtic League, which reflects a commitment to preserving and promoting Celtic culture, history, and language rights.

By synthesizing his lived experience in Ireland, philosophical expertise, and Celtic heritage, Gregory has emerged as a leading voice in understanding the relationship between Celtic culture, Christian spirituality, and the roots of communal identity found in the British Isles and beyond.

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