Columbia subject headings:
English poetry--Middle English, 1100-1500.
Harvard subject headings:
Arthurian romances.
English poetry--Middle English, 1100-1500
Gawain (Legendary character)--Romances.
Green Knight (Arthurian legendary character)--Romances.
Knights and knighthood--Poetry.
Manuscripts, English (Middle)--England--West Midlands.
Princeton subject headings:
English poetry--Middle English, 1100-1500.