Born in Dublin (Ireland) on 17 February 1956. Electronics Engineer (B.E., M.Eng.Sc.) from University College Dublin (1979). Licence and Doctorate in Theology from the University of Navarre (1987).

Ordained a priest on 6 June 1982 by St John Paul II in the Basilica of St Peter's (Rome). Incardinated in the Prelature of Opus Dei.

Taught theology at the University of Navarre (1985-90), and from 1990 at the School of Theology of the Pontifical University of the Holy Cross ("Santa Croce"). Vice-Rector at "Sedes Sapientiae" International Ecclesiastical College (1991-95). Academic Vice-Rector at Santa Croce (1998-2000). Dean of the School of Theology (2000-2008). Professor of Theological Anthropology (2004-2026). Professor Emeritus (2026). Spiritual Director at Collegio Ecclesiastico Internazionale "Sedes Sapientiae" (2009-2020). Director of the Department of Dogmatic Theology (2012-), Director of the Centro di Formazione Sacerdotale (2016-2020). Procurator of Opus Dei (2020-). ORCID Identifier: 0000-0001-5218-2756

Member of the Scientific Board of the journals: "Annales Theologici", "Scripta Theologica",  "Studia Universitatis Babes-Bolyai" and "Cuestiones teológicas".

Member of the Council of the Pontifical Academy of Theology (2004-).

Languages: read, spoken and written: English, Spanish, Italian. Read: French, German, Portuguese, Latin, Biblical Greek.

Academic interests: anthropology, eschatology, creation theology, Lutheran-Catholic ecumenical dialogue, relationship philosophy-theology and faith-culture, priestly spirituality