Jesuit Community Members

William A. Clark, S.J.

Associate Professor Religious Studies

William A. Clark, S.J.

William A. Clark, S.J., is an Associate Professor in the Department of Religious Studies specializing in systematic theology, particularly ecclesiology, with a special interest in parish life and issues affecting local church communities. He earned degrees at Williams College, Loyola University of Chicago, and his doctorate at the Weston Jesuit School of Theology in Cambridge, Massachusetts. He began teaching at Holy Cross in September 2001.

Fr. Clark offers various courses on Catholicism, local church communities, and Christian prayer.  He is the author of A Voice of Their Own: The Authority of the Local Parish (Liturgical Press, 2005), and various articles, book chapters, dictionary entries, and reviews. He has also presented many lectures and retreats for parishes and other church groups in New England, around the country, and abroad.  In addition to his academic work, Fr. Clark has extensive experience in parish pastoral work, retreat direction, and music ministry.  He served as pastor of St. Thomas Aquinas Church in Kingston, Jamaica, for several years.  A CD of his original Christian music, performed with a small group of musicians named "Spirit Call," is available from him, for the benefit of poor families in Jamaica.

John Gavin, S.J.

Associate Professor, Religious Studies

John Gavin, S.J.

Father Gavin earned his B.A. from Boston College, his M.A. from Fordham University, and his M.Div. from the Jesuit School of Theology in Berkley. He received his Sacred Theology Doctorate in Rome and was a lecturer at the Pontifical Biblical Institute and the Gregorian University for three years. Fr. Gavin entered the Society of Jesus in 1991 and was ordained as a Catholic priest in 2002. He is the author of 'They are like the angels in the heavens': Angelology and Anthropology in the Thought of Maximus the Confessor (Augustinianum, 2009) and A Celtic Christology: The Incarnation According to John Scottus Eriugena (Cascade, 2014). 

James M. Hayes, S.J.

Associate Chaplain for Mission

James M. Hayes, S.J.

James M. Hayes, S.J. (Holy Cross 1972) served as rector of the Jesuit Community from 15 August 2004 until 31 July 2010.  In addition he chaired the Mission and Identity Community and worked part time in campus ministry.  After a brief sabbatical, Father Hayes returned full time in campus ministry, continues as a member of the Mission and Identity Committee, and served as chaplain for the Class of 2015.  From 1999-2004 Father Hayes served as vocation director and assistant for International ministries for the New England Province of the Society of Jesus.  In addition, Father Hayes was superior of Ignatius House, the Provincial Residence in Boston. For four years, Father Hayes ministered on the island of Jamaica both as a teacher at Saint George’s College, and as a parochial vicar at Saint Thomas Aquinas University parish.  From 1987-1992, Father Hayes served as a campus minister at Fairfield University.  Father holds a bachelor degree from the College of the Holy Cross and master's degrees from Gonzaga University in Spokane, WA; Regis College University of Toronto; Jesuit School of Theology at Berkeley and Loyola College in Maryland. He was ordained at St. Joseph Chapel at College of the Holy Cross in June of 1985.

Father Hayes grew up in Grosse Pointe Farms, Michigan the son of the late Neil B. Hayes (Holy Cross 1932) and the late Mary Elizabeth Hayes. Father Hayes' older brother, Neil, died in Vietnam in 1970. He has three younger brothers, six nephews (including Colin Hayes HC ’12) and two nieces, one grandniece and one grandnephew.

Earle L. Markey, S.J.

Associate Director of Admissions (retired)

Earle L. Markey, S.J.

A native of West New York, NJ Father Markey attended St. Peter's Prep and the College of the Holy Cross. He completed his graduate work in Education at Fordham University.  Father Markey entered the Jesuits in July, 1953.  He did regency teaching and coaching at the Ateneo de Zamboanga, Philippines 1957-1960.  After Ordination to the Priesthood taught theology at the Ateneo de Manila 1966-1970.

From 1971-1976, Father Markey returned home as principal of St. Peters Prep and then back to campus in 1976 to become Associate Dean and then Dean of Students until 1985. Father Markey was the Vice President of Student Affairs Dean of Students until 1996. He served as the Associate Director of Admissions, Jesuit Relations until his retirement in 2023.

He has been on the Board of Trustees at Holy Cross, St. Peter's Prep, Fordham University, and St. Louis University. He has Professional Memberships with NASPA National Association of Student Personnel Administration and JASPA Jesuit Association of Student Personnel Administration.

Thomas D. McMurray, S.J.


Thomas D. McMurray, S.J.

Entered the Society of Jesus in 1970, ordained a priest in 1979, completed tertianship in 1986.
MS, Education, 
Pace University, New York, NY
Master of Divinity, Jesuit School of Theology in Berkeley, Berkeley, CA
(Concentration: Dialogue between Science and Religious faith.)
MS, Ocean Engineering,  University of Massachusetts, Amherst, MA
(Concentration: Oceanography and Civil Engineering)
BS, Physics, Fairfield University, Fairfield, CT
(Math Minor)

Currently serving as Chaplain, Director of Admissions, and Director of Jesuit Mission and Identity at Nativity School of Worcester.

Past assignments include:
Regional Superior of Jamaica
President and Chairman of the Board of St. George’s College, Kingston, Jamaica
Director of Mission and Identity: Cheverus High School and Fairfield University (co-facilitator)
Spiritual Direction and directing the Spiritual Exercises
Director of Spirituality and Pastoral Ministries with the Jesuit Conference
Hospice Chaplaincy
L’Arche Community (Daybreak) Chaplain

Keith Muccino, S.J., M.D,

Associate Director - Pre Health Professions Advising

Fr. Keith Muccino, S.J., M.D,

Fr. Muccino graduated from the College of the Holy Cross in 1974 following which he attended Loyola University Chicago-Stritch School of Medicine where he received his M.D. degree in 1977. He completed residency training in Internal Medicine at St. Francis Hospital in Hartford, CT. In addition to being a board certified Internist, Fr. Muccino is also board certified in Emergency Medicine, which he practiced at York Hospital, in York, Pa until he joined the Society of Jesus in 1988, entering the Jesuit Novitiate at Wernersville, PA (Maryland Province). 

He obtained his M.Div from Weston Jesuit School of Theology and was ordained to the priesthood in 1996. Following ordination he has served as a clinician, educator, and administrator at the Medical Centers at Georgetown University and Loyola University Chicago. He most recently served as Associate Provost for Educational Resources at Loyola University Chicago’s Health Sciences Division.  In addition to working in the Pre Health Professions Advising Program at Holy Cross, he serves as an Educational Specialist at UMass Medical School in Worcester, MA.

Timothy W. O'Brien, S.J. '06

Director of Mission Initiatives

Rev. Timothy O'Brien, S.J.

Fr. Timothy O'Brien, S.J., hails from King of Prussia, Pennsylvania. A 2006 alumnus of Holy Cross, Fr. O'Brien entered the Jesuits in 2008. After entering the Society, he pursued graduate studies in philosophy, theology, and history. A former faculty member at Loyola University Maryland, his academic research focuses on the spiritual and religious culture of early modern Europe, especially the Iberian Peninsula. Fr. O'Brien was ordained a priest in 2018, and has served as assistant pastor at Holy Trinity Catholic Church in Washington, D.C. In 2021, he returned to the College as Director of Mission Initiatives in the Office of Mission.

William E. Reiser, S.J.

Professor of Theology

William E. Reiser, S.J.

After six years at St. Thomas Seminary in Bloomfield, Connecticut, Father Reiser entered the Society of Jesus and later attended Boston College. He majored in philosophy and then taught in the Philosophy Department at Holy Cross for three years. He completed his theology studies at the Weston Jesuit School of Theology in Cambridge and was ordained in 1972. He did doctoral studies at Vanderbilt University. Father Reiser has been teaching theology at Holy Cross since 1978. Some of his writings include To Hear God’s Word, Listen to the World; Seeking God in All Things: Theology and Spiritual Direction; and Jesus in Solidarity with His People: A Theologian Looks at Mark. A collection of his articles written for Vocations & Prayer Magazine (Getting to Know the God We Believe in: Some Lessons from Religious Life) can be found at He has traveled many times to Bolivia and is involved pastorally with the Hispanic community in Worcester.

William E. Stempsey, S.J.

Professor of Philosophy

William E. Stempsey, S.J.

Rev. William E. Stempsey, S.J., is professor of philosophy at Holy Cross; he also works in medical ethics as adjunct associate professor at the University of Massachusetts Medical School. He received a Ph.D. in philosophy from Georgetown University in 1996, working under Dr. Robert Veatch and concentrating in bioethics and the philosophy of medicine.

Father Stempsey also holds the degrees of Master of Divinity and Master of Sacred Theology from the Jesuit School of Theology at Berkeley, and the Master of Arts in health care ethics from Loyola University Chicago. Before entering the Jesuit order, he received the Bachelor of Science degree from Boston College and the Doctor of Medicine degree from State University of New York at Buffalo School of Medicine. He served as a resident in pathology at Boston City Hospital, University Hospital, and The Children's Hospital, all in Boston.

His research interests include the philosophy of diagnosis, the concepts of health and disease, the relation of contemporary philosophy of science to bioethics, the role of religion in bioethics, the ethics of end-of-life decisions, and the ethics of organ transplantation.

He is the author of Disease and Diagnosis: Value-Dependent Realism (Kluwer, 1999) and editor of Elisha Bartlett's Philosophy of Medicine (Springer, 2005).