The Telegraph names The Most Rev. Katharine Jefferts Schori, Presiding Bishop of The Episcopal Church as one of 12 women who shaped Christianity:
1 and 2: The Holy Marys
3: Theodora Episcopa
4. Hilda of Whitby (614–80)
5. Pope Joan (853-55)
6. Hildegard of Bingen (1098–1179)
7. Elizabeth of Hungary (1207–31)
8. Mary Ward (1585–1645)
9. Therese of Lisieux (1873–97)
10. Blessed Teresa (1910-97)
11. Katharine Jefferts Schori (1954- )
Raised as a Roman Catholic, Jefferts Schori became in 2006 the first female primate (head) of one of the branches of the worldwide Anglican Communion, of which the Church of England is a member. She is Presiding Bishop of the Episcopalian Church in the US, where her appointment has caused near schism. Unusually for a Christian leader, she supports abortion rights for women.
12. Christine Mayr-Lumetzberger (1956- )
Read about all of the women. Who would you add?