The idea equating twins with infidelity was a common folkloric belief at the time. It also appears in other
chivalric romances, such as the Swan-Children of the
Knight of the Swan, in the variant Beatrix. But as in those romances, it is treated as the result of envy and slander and so denounced.
Child abandonment is likewise shared with other medieval works, such as the fourteenth century
Middle English romance Sir Degaré. This may reflect pre-Christian practices, both Scandinavian and Roman, that the newborn would not be raised without the father's decision to do so. The ring which identifies Le Fresne as a particular person of high birth is a motif that, according to Michelle Freeman, may have come from the ''
Roman d'Enéas''. This is the twelfth-century version of the
Aeneas legend that Marie would have been familiar with.
Le Fresne shows no influence of
courtly love. Rather than regarding love as important, Gurun shows no remorse about abandoning it for a lawful marriage. For her part, Le Fresne shows no signs of conflict, gently yielding her place and even serving her successor. This motif of a man encouraged to abandon a faithful partner for a new wife appears in popular ballads, both in English and Scandinavian form, such as
Fair Annie. These later popular tales more often feature a heroine who was kidnapped by pirates when young and ransomed by the hero, thus ending as ignorant of her birth as this heroine. The hazel tree (la coudre) also makes an appearance in both
Laüstic and
Chevrefoil, two of Marie's other Lais. ==Variants==