Dr. J. Marianne Siegmund earned her B.A. in Philosophy at Christendom College in Front Royal, Virginia and her M.A. in Religious Studies at the Notre Dame Graduate School of Christendom College in Alexandria, Virginia. She also holds the Advanced Apostolic Catechetical Diploma awarded by the Holy See (Congregation for Clergy) through NDGS. After several years of teaching, she returned to graduate school, earning her Licentiate in Sacred Theology (Marriage and Family) at the Pontifical John Paul II Institute for Studies on Marriage and Family at the Catholic University of America in Washington, D.C. After graduate studies in philosophy at the University of Dallas and a summer immersed in further coursework at the Far Eastern National University in Vladivostok, Russia, she went to Italy for doctoral studies. Her Doctorate in Theology (Spirituality) is from the Pontifical University of Saint Thomas Aquinas in Urbe / Angelicum in Rome, Italy.

Dr. Siegmund teaches and has taught at several colleges, seminaries and universities around the country. She has also lectured, delivered scholarly papers at conferences across the nation, and she has published articles in both philosophy and theology. Her latest book, The Face of Jesus, the Martyr, and the Reciprocity of Abiding Love, was published in November of 2024. Her book receiving notice, Dr. Siegmund was invited to present a paper on martyrdom at the Chicago Theological Initiative Conference on Christian Martyrdom co-sponsored by The Wheaton Center for Early Christian Studies at Wheaton College and The Center for Scriptural Exegesis, Philosophy, and Doctrine at Mundelein Seminary in the spring of 2025.

Dr. Siegmund is a member of the Society of Catholic Social Scientists, the Fellowship of Catholic Scholars, and the American Catholic Philosophical Association. Recently, her paper, “The Original Unity of Man and Woman in Relation to Ecclesiology,” was selected for presentation at the national conference of the American Catholic Philosophical Association (ACPA).