Fr. Donald H. Calloway, MIC, a convert to Catholicism, is a member of the Congregation of Marian Fathers of the Immaculate Conception. Before his conversion to Catholicism, he was a high school dropout who had been kicked out of a foreign country, institutionalized twice, and thrown in jail multiple times.

After his radical conversion he earned a B.A. in Philosophy and Theology from the Franciscan University of Steubenville, M.Div. and S.T.B. degrees from the Dominican House of Studies in Washington, DC, and an S.T.L. in Mariology from the International Marian Research Institute in Dayton, Ohio.