Mary Twibill Clark RSCJ (October 23, 1913 – September 1, 2014) was an American Roman Catholic nun, academic, and civil rights advocate.
Born in Philadelphia, Pennsylvania, to Francis S. and Regina Holland (née Twibill) Clark, Mary Clark entered the Society of the Sacred Heart on June 5, 1939[1] after graduating Manhattanville College.
[5][6] Clark served on the executive committee of the Eastern Division of the American Philosophical Association, and towards the end of her life as a visiting academic at Ralston College.
[7] Clark was among the original Editorial Advisors of the scholarly journal Dionysius, to which she contributed a discussion of the relevance of Augustine's theology of the Trinity,[8] and was in addition a member of the Board of Editorial Consultants of the Personalist Forum.
[9] Over the years, she also taught as a visiting professor at San Francisco, Fordham, Villanova, Fairfield, and Marquette universities.