|Residence||Ossining, New York|
|Parent(s)||Daniel Ellsberg, Carol Cummings|
Robert is the son of Carol Cummings, the daughter of a Marine Corps Brigadier General, and the American military analyst and whistleblower, Daniel Ellsberg. In 1975, at age 19, he dropped out of college, intending to spend a few months with the Catholic Worker Movement.
He stayed to become the managing editor of The Catholic Worker for two years (1976-8), a job that would introduce him to Dorothy Day and consequently would allow him to work with Day for the last five years of her life. This life-changing experience prompted him to convert to Catholicism.
In 1987 he began work as editor-in-chief of Orbis Books. He is the author of several books, many of which have received awards; his Blessed Among All Women tied a Catholic Press Association record by winning awards for Gender, Spirituality, and Popular Presentation of the Catholic Faith. He is the editor of the published diaries and letters of Dorothy Day.
- All Saints: Daily Reflections on Saints, Prophets, and Witnesses for Our Time (Crossroad, 1997)
- The Saints' Guide to Happiness: Practical Lessons in the Life of the Spirit, Doubleday, 2005. ISBN 978-0-385-51566-5
- Blessed Among All Women: Reflections on Women Saints, Prophets, and Witnesses for Our Time (Crossroad, 2006).
- The Duty Of Delight: The Diaries of Dorothy Day. ISBN 0-87462-023-6 (editor) Marquette University Press, Milwaukee, 2008
- All the Way to Heaven: The Selected Letters of Dorothy Day. ISBN 978-0-87462-061-0 (editor) Marquette University Press, Milwaukee, 2010.
- McCarthy, Gerry. "Author Robert Ellsberg". Retrieved 2008-06-22.
- Hogan, Michael. "Quiet Gestures, Heroic Acts: A Conversation with Robert Ellsberg" Check
|url=value (help). Retrieved 2008-06-22.
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