Columbia subject headings:
Guillaume, de Lorris, active 1230. Roman de la rose.
Harvard subject headings:
Courtly love in literature.
Guillaume, de Lorris, active 1230. Roman de la rose.
Romances--History and criticism.
Princeton subject headings:
Guillaume, de Lorris, active 1230. Roman de la rose.
Jean, de Meun, approximately 1240-approximately 1305.