Columbia subject headings:
Harvard subject headings:
Arthurian romances--History and criticism.
Families in literature
Families in literature.
Knights and knighthood in literature.
Lancelot (Legendary character)--Romances--History and criticism.
Lancelot (Prose cycle)
Love in literature
Marriage in literature.
Princeton subject headings:
Lancelot (Legendary character)--Romances--History and criticism.