When their father dies in battle against King Claudas, Lionel and Bors are rescued by the Lady of the Lake and raised in her otherworldly kingdom alongside her foster-son Lancelot.
One day, while travelling with Lancelot as a young man, Lionel is captured by the rogue knight Turquine, who whips him with briars and throws him in the dungeon.
The scenario repeats itself later while he is on the Quest for the Holy Grail, where he proves very unworthy of the blessed object by trying to kill his brother for not rescuing him.
Bors had seen Lionel getting beaten and led away, but had to make a decision to save either him or a young girl being dragged in the opposite direction.
[4] This song has much in common with a medieval tale about a knight who slays a terrifyingly fiendish boar in Sidon, in the fourteenth century romance of Sir Eglamour of Artois.
[5] The terrible swine is a frequent foe in romantic tales, for instance the beast Twrch Trwyth in Culhwch and Olwen.