Columbia subject headings:
Christian martyrs in art.
Christian saints in art.
Four Crowned Martyrs in art.
Four Crowned Martyrs--Cult.
Harvard subject headings:
Christian martyrs in art.
Christian saints in art.
Four Crowned Martyrs in art.
Four Crowned Martyrs--Cult.
Princeton subject headings:
Christian martyrs in art.
Christian saints in art.
Four Crowned Martyrs in art.
Four Crowned Martyrs--Cult.