Columbia subject headings:
Guglielma, 1210-1281.
Maifreda, -1300.
Harvard subject headings:
Guglielma, 1210-1281.
Maifreda, -1300.
Princeton subject headings:
Christian heretics--Italy--Biography.
Guglielma, 1210-1281.
Inquisition--Italy--History.
Maifreda, -1300.
Women in Christianity--History--Middle Ages, 600-1500.