In Pope Francis' Misericordiae Vultus, he writes "During this Jubilee Year of Mercy, we look forward to the experience of opening our hearts to those living on the outermost fringes of society."Dr. Mary Elizabeth O'Brien, OP, has completed a comprehensive study of the life and ministry of Blessed Margaret of Castello, a thirteenth century Dominican Tertiary. Blessed Margaret's life, as illustrated in Dr. O'Brien's work, vividly exemplifies what Pope...