Religious Leaders:
* Hildegard von Bingen (1098-1179): A German Benedictine abbess, composer, philosopher, theologian, visionary, and writer. She was a prolific writer and composer, producing works on medicine, natural history, music, and theology.
* Julian of Norwich (c. 1342-1416): An English anchoress and mystic who wrote "Revelations of Divine Love," one of the earliest surviving books written in English by a woman.
* Catherine of Siena (1347-1380): An Italian mystic and Dominican tertiary who was a powerful advocate for peace and reform within the Catholic Church.
Writers:
* Christine de Pizan (c. 1364-c. 1430): A French writer and poet considered one of the first feminists. She wrote on diverse subjects, including the education of women, the lives of famous women, and political commentary.
* Marie de France (c. 1160-1215): A French poet who wrote in Anglo-Norman and is known for her lais, short poems that tell romantic or tragic tales.
Musicians:
* Hildegard von Bingen: As mentioned above, she composed liturgical music, hymns, and plays.
* Trota of Salerno (c. 11th century): A female physician and writer who likely composed medical treatises. Some sources suggest she might have also composed music, but there is no definitive evidence.
Important Note: It's crucial to remember that the records of women's lives during the Middle Ages are often incomplete. Many women who made significant contributions might not have left any written records.
Therefore, while we can identify prominent figures in the categories you mentioned, there isn't a single woman who perfectly embodies all three aspects of religion, literature, and music.