And in the geste as it is founde,
Nature so the cause ladde,
Tuo douhtres ek Dame Eve hadde,
The ferste cleped Calmana
Was, and that other Delbora.
[Laws of Marriage.]
Thus was mankinde to beginne;
Forthi that time it was no Sinne
The Soster forto take hire brother,
Whan that ther was of chois non other: 70