Columbia subject headings:
Martyrdom--Christianity--History--Early church, ca. 30-600.
Martyrdom--Christianity--History--Middle Ages, 600-1500.
Harvard subject headings:
Martyrdom--Christianity--History--Early church, ca. 30-600--Congresses.
Martyrdom--Christianity--History--Middle Ages, 600-1500--Congresses.
Princeton subject headings:
Martyrdom--Christianity--History--Early church, ca. 30-600.
Martyrdom--Christianity--History--Middle Ages, 600-1500.