Columbia subject headings:
Harvard subject headings:
Chrétien, de Troyes, active 12th century. Érec et Énide
Chrétien, de Troyes, active 12th century.
Erec (Legendary character)
Geraint.
Princeton subject headings:
Chrétien, de Troyes, active 12th century. Érec et Énide.
Mabinogion.
Red Book of Hergest.