St. Birgitta of Sweden (1303-1373, canonized 1391) was one of the most charismatic and influential female visionaries of the later Middle Ages. Altogether, she received some 700 revelations, dealing with subjects ranging from meditations on the human condition, domestic affairs in Sweden, and ecclesiastical matters in Rome, to revelations in praise of the Incarnation and devotion to the Virgin. Her Revelations, collected and ordered by her confessors, circulated widely throughout Europe and long after her death. Many eminent individuals, including Cardinal Juan Torquemada, Jean Gerson, and...